TRIPOLI, Libya (AP) — A Libyan security official says military troops have detained two Americans in the restive eastern city of Benghazi.

The official says the two Americans are college basketball players and members of the al-Helal team of the Benghazi University.

The official says they were detained early on Friday inside the campus. He did not give their names and spoke on condition of anonymity in line with regulations.

It was not clear why the two were detained. There was no immediate comment from the U.S. Embassy in the Libyan capital, Tripoli.

Last month, four U.S. military personnel were briefly taken into custody at a checkpoint in northwestern Libya and later released.

In September 2012, militants attacked the U.S. diplomatic mission in Benghazi, killing U.S. Ambassador Chris Stevens and three other Americans.