AP sources say that Libya has released 4 US military personnel who had been detained.
Just hours ago the U.S State Department said the Libyan government was holding the group.
When the incident was made public, State Department spokeswoman Jen Psaki said that the United States was in touch with Libyan officials to ensure the Americans' release.
The U.S Embassy in Tripoli includes a security detail. The embassy's personnel are restricted in their movements in Libya.