Several FBI employees, stationed in cities across Asia, have been recalled to Washington in recent months while the agency investigates allegations related to parties and interactions with prostitutes, according to people familiar with the matter.

The Justice Department’s inspector general is examining the allegations, which involve Federal Bureau of Investigation personnel in some half a dozen cities, including in East and Southeast Asia, said the people.

The FBI said in a statement via email, that it referred the allegations to the inspector general. “Upon learning of these allegations of misconduct, action was taken to reassign certain personnel to non-operational roles while the allegations are reviewed,” the agency said.

In the statement, the FBI said, “All FBI employees are held to the highest standards of conduct, and allegations against any employee are taken very seriously.”

A spokesman for the inspector general, the Justice Department’s in-house watchdog, declined to comment.