Police are investigating a robbery that occurred early this morning at a casino on the northeast side of Rapid City.

At around 2 a.m., an employee at the Jackpot Casino Too, 1415 N. Lacrosse St., was closing up the business when a man approached him with a knife and demanded money, according to a news release from the Rapid City Police Department. 

The man then left the casino with an undisclosed amount of money. He was described as white, 30 to 40 years old, with brown eyes and a deep voice. He was wearing a gray hooded sweatshirt, blue jeans, black gloves and white sneakers. 

Anyone with information about the robbery is asked to call Detective Steve Neavill at 394-4134 or send an anonymous tip by texting "RCPD" and the information to 847411.