Stevens County authorities are looking for a 31-year-old man they believe was involved in a convenience store robbery this weekend. A warrant has been issued for the arrest of Michael Ray Snyder, one of two men suspected in the armed robbery of the Old Schoolhouse Trading Post in Addy around 10 a.m. Saturday, according to a news release from the Stevens County Sheriff’s Office. James S. Lambert, 41, has already been arrested in connection with the alleged robbery and is being held on $100,000 bond at the Stevens County Jail in Colville. Witnesses said two men walked into the convenience store, wearing masks and brandishing a gun. The men left the store with an undisclosed amount of cash in a car that was later found abandoned in a wooded area near the store. Authorities believe Snyder, who is wanted on warrants out of Snohomish and Island counties, may be armed and should be considered dangerous. He may have also shaved his head and beard to avoid capture, the Sheriff’s Office said. Anyone with information about his whereabouts is asked to dial 911 or the Stevens County Sheriff’s Office at (509) 684-2555.