WASHINGTON (AP) -- The House of Representatives has approved a resolution calling on Tehran to fulfill its promise of assistance in the case of Robert Levinson, a former FBI agent who allegedly  went missing in Iran nine years ago.


Lawmakers approved the bipartisan resolution Monday.


The resolution calls Levinson, now 67, the longest held American hostage.


His case drew renewed attention in January when he was not part of a prisoner swap between the U.S. and Iranian governments that set free four other Americans who had been held in Iran's custody.


The resolution says Iran agreed to provide all available information about Levinson's disappearance.


Levinson disappeared from Iran's Kish Island in March 2007. A 2013 Associated Press investigation revealed that he was working for the CIA on an unauthorized intelligence-gathering mission.


By AP