A person was robbed about 9:30 p.m. in the 2500 block of Whiskey Road by a man who was armed with what appeared to be an assault rifle, according to a statement from the department.
Later, the Subway in the 700 block of Silver Bluff Road was robbed by a heavy-set white man with an assault rifle. He took money from the restaurant and fled in a light blue sedan. Property belonging to the first victim was found outside the restaurant.
Late Monday, bloodhounds were being used in the hunt for the suspects.
Anyone with information on the robberies can call Crimestoppers of the Midlands at 888-274-6372. Callers could receive a reward.