(CNN) -- The U.S. Embassy in Yemen closed Sunday, prompted by ongoing threats by Al-Qaeda in the Arabian Peninsula to attack American interests in Yemen, a U.S. news release said.
The announcement, which was made on the embassy's Web site, did not say when the embassy would reopen.
On December 31, the embassy alerted Americans in Yemen to stay on alert for possible terrorist violence.
Both moves follow a Christmas Day bombing attempt aboard a Northwest flight bound for Detroit, Michigan, from Amsterdam, Netherlands. On Saturday, President Obama linked the bombing suspect to an al Qaeda affiliate based in Yemen.