An investigation is underway after an armed robbery at a popular Forest Park eatery.

The holdup happened Sunday night at Silvertron Cafe on Clairmont Avenue. Birmingham police spokesman Lt. Sean Edwards said a masked man, a black male, entered the restaurant about 9:40 p.m., just after closing time.

Several employees were tied up, but there were no injuries. Edwards said an undisclosed amount of money was taken.

No arrests have been made, but Birmingham police robbery detectives are following several leads. This story will be updated as more information becomes available.