Suffolk police are investigating an armed robbery that happened Thursday morning at the Dollar General in the 1200 block of Wilroy Road.

The robbery was reported at 8:10 a.m., according to a city press release. Preliminary investigation found that the suspect entered the store shortly after opening, brought merchandise to the counter and then, as the clerk was bagging the purchase, displayed a knife and demanded all the cash that was in the drawer. He then fled the store with an undetermined amount of currency. There were no injuries.

The suspect is described as a dark-skinned black male with a stocky build wearing a yellow hard hat, black sunglasses, navy blue coveralls with black and white patches on the chest and yellow reflective tape on the arms.

The investigation is ongoing.

Anyone with information is asked to contact Crime Line at 1-888-LOCK-U-UP. Tipsters can also submit tips through the free P3 Tips mobile app, by going to www.p3tips.com or by visiting the Suffolk Police Department website at www.suffolkva.us/spd and looking for the Suffolk Crime Line link. Tipsters never have to give their names or appear in court and may be eligible for a reward of up to $1,000.