Faced with a deteriorating security situation, the U.S. Embassy in Yemen is asking Americans to leave and has moved staffers out of the country.

“The level of instability and ongoing threats in Yemen remain extremely concerning,” a State Department travel warning said, noting terrorist activities and civil unrest.

There are no plans for a U.S. government-sponsored evacuation of American citizens at this time, the State Department said.

The State Department is also urging U.S. citizens to defer travel to Yemen.

Yemen has been in an extended period of turmoil and before suspending operations on Wednesday, the U.S. Embassy was operating on a skeletal staff since late January.