Large Explosion
An emergency worker walks through an area of burned homes in San Bruno, Calif., on Saturday, Sept. 11, 2010. On Thursday, a gas line rupture caused a...
An emergency worker walks through an area of burned homes in San Bruno, Calif., on Saturday, Sept. 11, 2010. On Thursday, a gas line rupture caused a large explosion that killed at least four people and leveled dozens of homes. (AP Photo/Noah Berger)
Large Explosion
Bob Vasquez, a volunteer and evacuee, helps with donation boxes at an evacuation center in San Bruno, Calif., Saturday, Sept. 11, 2010. Fire crews do...
Bob Vasquez, a volunteer and evacuee, helps with donation boxes at an evacuation center in San Bruno, Calif., Saturday, Sept. 11, 2010. Fire crews doused the remnants of an enormous blaze and accounted for the residents of dozens of homes Friday after a gas line ruptured and an explosion ripped through in a neighborhood near San Francisco, killing at least four people. (AP photo/Tony Avelar)
Large Explosion
Evacuee Les Vaccari, 78, waits for news about his home outside the evacuation center in San Bruno, Calif., Saturday, Sept. 11, 2010. (AP photo/Tony A...
Evacuee Les Vaccari, 78, waits for news about his home outside the evacuation center in San Bruno, Calif., Saturday, Sept. 11, 2010. (AP photo/Tony Avelar)
Large Explosion
Alan Doulphus, right, a city worker, wheels out boxes of donated clothes at an evacuation center in San Bruno, Calif., Saturday, Sept. 11, 2010. Fire...
Alan Doulphus, right, a city worker, wheels out boxes of donated clothes at an evacuation center in San Bruno, Calif., Saturday, Sept. 11, 2010. Fire crews doused the remnants of an enormous blaze and accounted for the residents of dozens of homes Friday after a gas line ruptured and an explosion ripped through in a neighborhood near San Francisco, killing at least four people. (AP photo/Tony Avelar)
Large Explosion
Evacuees Antoneeti Vaccari, left, puts a donated pair of shoe on her husband Les Vaccari outside an evacuation center in San Bruno, Calif., Saturday,...
Evacuees Antoneeti Vaccari, left, puts a donated pair of shoe on her husband Les Vaccari outside an evacuation center in San Bruno, Calif., Saturday, Sept. 11, 2010. (AP photo/Tony Avelar)
Large Explosion
Emergency workers walk through an area of burned homes in San Bruno, Calif., on Saturday, Sept. 11, 2010. On Thursday, a gas line rupture caused a la...
Emergency workers walk through an area of burned homes in San Bruno, Calif., on Saturday, Sept. 11, 2010. On Thursday, a gas line rupture caused a large explosion that killed at least four people and leveled dozens of homes. (AP Photo/Noah Berger)
Large Explosion
Emergency workers walk through an area of burned homes in San Bruno, Calif., on Saturday, Sept. 11, 2010. On Thursday, a gas line rupture caused a la...
Emergency workers walk through an area of burned homes in San Bruno, Calif., on Saturday, Sept. 11, 2010. On Thursday, a gas line rupture caused a large explosion that killed at least four people and leveled dozens of homes. The crater is believed to be the origin of the burst. (AP Photo/Noah Berger)
A city spokesman says authorities are now unsure whether remains found at the suburban San Francisco blast that destroyed nearly 40 homes belonged to the two people reported missing since the explosion and fire.
San Bruno spokesman Steve Firpo says the remains were found Saturday morning, but could be those of four people already reported dead.
Firpo said earlier Saturday that the discovery brought the death toll in Thursday's blast to six people. He says officials now can only confirm that four died.
The San Mateo County Coroner's office said 44-year-old Jacqueline Greig, her daughter 13-year-old Janessa, and 20-year-old Jessica Morales were killed in the fire. One other victim found earlier has yet to be identified.
___
Contributing to this report were video journalist Haven Daley in San Bruno and John S. Marshall and Sudhin Thanawala in San Francisco. Burke reported from Fresno, California.
