A Texas man faces a robbery charge after he allegedly robbed a Topsham store at gunpoint not far from the police station, according to authorities. Da Markus Ra Shun Griffin, 20, of Crockett, Texas, was charged with robbery in connection with the Friday robbery of a business located at 7 Monument Place, just down the road from the Topsham Police Station, according to Topsham police. Topsham police were called to the location about 12:39 p.m.