US authorities say man claimed plot to kill Obama

It said Turkish National Police arrested the man last Friday in Istanbul.

Secret Service spokesman Ed Donovan said Monday the president was never in any immediate danger.

White House spokesman Robert Gibbs, who was with Obama in Istanbul on Tuesday, declined to comment on the incident.

Obama did not arrive in Turkey until Sunday, two days after the man's arrest.

Donovan said the Secret Service is not releasing any information about the suspect.

As standard procedure involving a threat against the president overseas, the Secret Service is following up with Turkish authorities regarding the case, Donovan said.