Turkey steps up pressure on Saudi Arabia over missing writer

People hold signs during a protest at the Embassy of Saudi Arabia about the disappearance of Saudi journalist Jamal Khashoggi, Wednesday, Oct. 10, 201

People hold signs during a protest at the Embassy of Saudi Arabia about the disappearance of Saudi journalist Jamal Khashoggi, Wednesday, Oct. 10, 201

Nihad Awad, right, executive director for the Council on American-Islamic Relations (CAIR), a Muslim civil rights and advocacy organization, speaks du

Nihad Awad, right, executive director for the Council on American-Islamic Relations (CAIR), a Muslim civil rights and advocacy organization, speaks du

A security guard waits to enter Saudi Arabia's consulate in Istanbul, Wednesday, Oct. 10, 2018. Turkish officials have said they believe Saudi writer

A security guard waits to enter Saudi Arabia's consulate in Istanbul, Wednesday, Oct. 10, 2018. Turkish officials have said they believe Saudi writer

FILE - In this Monday, Oct. 8, 2018 file photo, members of the Turkish-Arab Journalist Association hold posters with photos of missing Saudi writer Ja

FILE - In this Monday, Oct. 8, 2018 file photo, members of the Turkish-Arab Journalist Association hold posters with photos of missing Saudi writer Ja

ISTANBUL (AP) — Turkish President Recep Tayyip Erdogan is increasing his pressure on Saudi Arabia over the disappearance of journalist Jamal Khashoggi during a visit last week to the Saudi Consulate in Istanbul.

Erdogan is quoted by Turkish media on Thursday as telling journalists flying with him from Hungary that "we cannot remain silent to such an incident."

He also expressed new skepticism over Saudi claims that Khashoggi left the consulate unharmed on Oct. 2, then disappeared.

Erdogan says: "If a bird flew, if a mosquito appeared, these systems would catch them and (I believe) they would have the most advanced of systems."

Turkish officials say they believe Khashoggi was killed by the Saudis, without offering evidence to the allegations. The kingdom denies it but has offered no evidence to support its claims.