The robberies have occurred between 7 p.m. and 11:45 p.m. at convenience stores and gas stations in the City of Tacoma and in the Midland area of Pierce County, officials said. The first robbery occurred on Dec. 26 and the most recent robbery was Saturday.
In each case, the man enters the store, shows a gun and demands cash, threatening to shoot the clerk if they don't comply.
The robber then takes the cash and walks out of the store.
He's described as a black, in his 30s and about 6 feet tall with a heavy build. During the robberies he was seen wearing a black hooded sweatshirt, black gloves, black shoes, black pants or dark blue jeans, and a black mask.
If you have any information, you're asked to call the Tacoma-Pierce County CrimeStoppers hotline at 1-800-222-TIPS. Tips can be left anonymously and are eligible for a reward if they lead to the capture and prosecution of the suspect.