CALAIS — Police have issued an all points bulletin for a 25-year-old Calais man who robbed a local convenience store clerk at about midnight Monday at knife point and may have escaped into Canada.

Irving Car Wash and Convenience Store clerk Tim Atcheson was alone in the store when the suspect, later identified as Dean Travis Moore, walked into the store, ordered him to close up and then robbed him, Chief Michael Milburn said Wednesday.

According to an affidavit filed Wednesday in District Court, at around 2:15 a.m. Tuesday, Joan Kelly, who lives on North Street, called police to report that a man was banging on doors and yelling that he had been robbed. That man turned out to be Atcheson.

When Calais Police Officer Claude Chabre arrived, Atcheson told him that a man, who was not wearing a mask, entered the store, held a knife to the clerk’s neck and ordered him to close the store. The robber then emptied the safe and cash register. The robber also took Atcheson’s money, driver’s license and Social Security card, the affidavit said.

“The Irving Store has not yet been able to give an exact accounting, but they report missing both American and Canadian money,” the affidavit said.

Atcheson said Moore told him not to resist because Moore had been stabbed earlier this year and he “knew what to do with a knife.” Moore was stabbed outside the Portside Inn on North street last summer, but refused to cooperate with the police investigation of the incident, the affidavit said.

Although Moore was in the store for almost two hours, Milburn would not elaborate on what he was doing. “This is not your normal robbery where a perpetrator walks into a place of business and robs it within a matter of seconds or minutes,” the chief said.

The convenience store sells fried chicken, hot dogs and pizza, but Milburn would not comment on whether the suspect remained in the store to eat. Atcheson told police that he was able to get away, but Milburn would not comment on how Atcheson escaped.

Police were able to follow a set of foot tracks to the railroad bridge behind the store that crosses into Canada.

Detective Bruce Settler of the Maine State Police created a composite sketch of Moore based on Atcheson’s description.

When police showed Atcheson photographs of six men who resembled the robber, the store clerk was able to pick Moore out of the picture lineup.

Moore is described as 5 feet 10 inches tall and 180 pounds. He has brown hair and brown eyes, and wears a nose ring on his left nostril. Milburn asked anyone who may have seen the suspect to call the Calais Police Department.