Alexa

Crews try to reach smoldering US homes after blast

 A ball of flames and smoke are seen in San Bruno, Calif., Thursday, Sept. 9, 2010. Several homes were destroyed as a massive fire roared through a mo...
 A massive fire roars through a mostly residential neighborhood in San Bruno, Calif., Thursday, Sept. 9, 2010. Firefighters from San Bruno and surroun...
 A massive fire is roars through a mostly residential neighborhood in San Bruno, Calif., Thursday, Sept. 9, 2010. Firefighters from San Bruno and surr...
 A massive fire is roars through a mostly residential neighborhood in San Bruno, Calif., Thursday, Sept. 9, 2010. Firefighters from San Bruno and surr...
 Map shows massive fire from possible gas line explosion in San Bruno, Calif.
 A woman is treated by firemen after an explosion in San Bruno, Calif., Thursday, Sept. 9, 2010. Several homes were destroyed as a massive fire roared...
 A firefighter shoots water from his firehose at a massive fire, Thursday, Sept. 9, 2010 in a neighborhood in San Bruno, Calif. (AP Photo/George Nikit...
 Two cars burned after a massive fire  roared through a mostly residential neighborhood in San Bruno, Calif., Thursday, Sept. 9, 2010. Firefighters fr...
 A home for sale sign is shown in front of home that was destroyed after a massive fire that roared through a mostly residential neighborhood in San B...
 A helicopter drops water on a massive fire through a mostly residential neighborhood in San Bruno, Calif., Thursday, Sept. 9, 2010. Firefighters from...
 Evacuees look for donated clothing at a Red Cross shelter in San Bruno, Calif., Friday, Sept. 10, 2010 following a massive fire in their neighborhood...
 An injured evacuee who wished not to be identified, looks for donated clothing as she walks around a Red Cross shelter in San Bruno, Calif., Friday, ...
 Millbrae, Calif., fire chief Dennis Haage, left, talks with San Bruno, Calif., residents Toni Vaccari, right, and her daughter, Debbie Shea, about re...
 San Bruno Mayor Jim Ruane talks about the aftermath of a massive gas explosion during a news conference at a shopping center, Friday, Sept. 10, 2010,...
 A volunteer, left, helps an evacuees who wished not to be identified, at a Red Cross shelter in San Bruno, Calif., Friday, Sept. 10, 2010 after she w...
 San Bruno, Calif., resident Lester Vaccari, bottom, listens to find out when he can return to his home following a massive gas explosion, during a ne...
 California Lt. Gov. Abel Maldonado, at podium, stands with other public officials and talks about the aftermath of a massive gas explosion during a n...
 Pacific Gas and Electric Company President Chris Johns talks about the massive gas explosion during a news conference, Friday, Sept. 10, 2010, in San...
 Pacific Gas and Electric Company President Chris Johns, right, answers questions following a massive gas explosion as California Lt. Gov. Abel Maldon...
 An injured evacuee who wished not to be identified, touches her head as she walks around a Red Cross shelter in San Bruno, Calif., Friday, Sept. 10, ...
 Firefighters continue to battle hot spots and search for missing people in a neighborhood following a massive gas line explosion in San Bruno, Calif....
 Firefighters continue to battle hot spots in a neighborhood following a massive gas line explosion in San Bruno, Calif., Friday, Sept. 10, 2010. Fire...
 Firemen work on the remains of a home damaged by a massive fire in a mostly residential neighborhood in San Bruno, Calif., Friday, Sept. 10, 2010. Fi...
 A rescue worker walks with a search dog and goes house to house looking for missing people in a neighborhood damaged by a gas line explosion in San B...
 Firefighters and officials with dogs look over damage caused by a massive fire in a mostly residential neighborhood in San Bruno, Calif., Friday, Sep...
 Firemen work on the remains of a home damaged by a massive fire in a mostly residential neighborhood in San Bruno, Calif., Friday, Sept. 10, 2010.   ...
 Aerial view of damage caused by a massive fire in a mostly residential neighborhood in San Bruno, Calif., Friday, Sept. 10, 2010.   Fire crews tried ...

Large Explosion

A ball of flames and smoke are seen in San Bruno, Calif., Thursday, Sept. 9, 2010. Several homes were destroyed as a massive fire roared through a mo...

Large Explosion

A massive fire roars through a mostly residential neighborhood in San Bruno, Calif., Thursday, Sept. 9, 2010. Firefighters from San Bruno and surroun...

APTOPIX Large Explosion

A massive fire is roars through a mostly residential neighborhood in San Bruno, Calif., Thursday, Sept. 9, 2010. Firefighters from San Bruno and surr...

APTOPIX Large Explosion

A massive fire is roars through a mostly residential neighborhood in San Bruno, Calif., Thursday, Sept. 9, 2010. Firefighters from San Bruno and surr...

CALIF EXPLOSION

Map shows massive fire from possible gas line explosion in San Bruno, Calif.

Large Explosion

A woman is treated by firemen after an explosion in San Bruno, Calif., Thursday, Sept. 9, 2010. Several homes were destroyed as a massive fire roared...

Large Explosion

A firefighter shoots water from his firehose at a massive fire, Thursday, Sept. 9, 2010 in a neighborhood in San Bruno, Calif. (AP Photo/George Nikit...

Large Explosion

Two cars burned after a massive fire roared through a mostly residential neighborhood in San Bruno, Calif., Thursday, Sept. 9, 2010. Firefighters fr...

Large Explosion

A home for sale sign is shown in front of home that was destroyed after a massive fire that roared through a mostly residential neighborhood in San B...

APTOPIX Large Explosion

A helicopter drops water on a massive fire through a mostly residential neighborhood in San Bruno, Calif., Thursday, Sept. 9, 2010. Firefighters from...

Large Explosion

Evacuees look for donated clothing at a Red Cross shelter in San Bruno, Calif., Friday, Sept. 10, 2010 following a massive fire in their neighborhood...

Large Explosion

An injured evacuee who wished not to be identified, looks for donated clothing as she walks around a Red Cross shelter in San Bruno, Calif., Friday, ...

Large Explosion

Millbrae, Calif., fire chief Dennis Haage, left, talks with San Bruno, Calif., residents Toni Vaccari, right, and her daughter, Debbie Shea, about re...

Large Explosion

San Bruno Mayor Jim Ruane talks about the aftermath of a massive gas explosion during a news conference at a shopping center, Friday, Sept. 10, 2010,...

Large Explosion

A volunteer, left, helps an evacuees who wished not to be identified, at a Red Cross shelter in San Bruno, Calif., Friday, Sept. 10, 2010 after she w...

Large Explosion

San Bruno, Calif., resident Lester Vaccari, bottom, listens to find out when he can return to his home following a massive gas explosion, during a ne...

Large Explosion

California Lt. Gov. Abel Maldonado, at podium, stands with other public officials and talks about the aftermath of a massive gas explosion during a n...

Large Explosion

Pacific Gas and Electric Company President Chris Johns talks about the massive gas explosion during a news conference, Friday, Sept. 10, 2010, in San...

Large Explosion

Pacific Gas and Electric Company President Chris Johns, right, answers questions following a massive gas explosion as California Lt. Gov. Abel Maldon...

Large Explosion

An injured evacuee who wished not to be identified, touches her head as she walks around a Red Cross shelter in San Bruno, Calif., Friday, Sept. 10, ...

Large Explosion

Firefighters continue to battle hot spots and search for missing people in a neighborhood following a massive gas line explosion in San Bruno, Calif....

APTOPIX Large Explosion

Firefighters continue to battle hot spots in a neighborhood following a massive gas line explosion in San Bruno, Calif., Friday, Sept. 10, 2010. Fire...

Large Explosion

Firemen work on the remains of a home damaged by a massive fire in a mostly residential neighborhood in San Bruno, Calif., Friday, Sept. 10, 2010. Fi...

Large Explosion

A rescue worker walks with a search dog and goes house to house looking for missing people in a neighborhood damaged by a gas line explosion in San B...

Large Explosion

Firefighters and officials with dogs look over damage caused by a massive fire in a mostly residential neighborhood in San Bruno, Calif., Friday, Sep...

Large Explosion

Firemen work on the remains of a home damaged by a massive fire in a mostly residential neighborhood in San Bruno, Calif., Friday, Sept. 10, 2010. ...

Large Explosion

Aerial view of damage caused by a massive fire in a mostly residential neighborhood in San Bruno, Calif., Friday, Sept. 10, 2010. Fire crews tried ...

A fire official says a quarter of the homes burned in an enormous blaze sparked after a gas line ruptured are still to hot to search.
Fire Chief Dennis Haag says Friday afternoon that crews are going door to door in the neighborhood near San Francisco. At least four people were killed in the explosion and dozens more injured. Authorities say there could be more casualties.
Haag said they're still not able to access the site of the ruptured gas line because it's covered with water.
Pacific Gas and Electric Co. President Chris Johns says crews still haven't been able to determine the cause of the rupture or the ensuing blast because they can't get close enough.