San Francisco police believe they have solved a nearly one-year-old homicide case after they arrested a man Thursday for allegedly killing a woman in her South of Market hotel room in December.

Anthony Moses, 47, with no permanent address, was booked on murder charges for allegedly slaying Robyn Williams, 49, in a hotel room on the 400 block of Minna Street on Dec. 10, 2006, police said.

An investigation led police to Moses, who was arrested while already at the county jail in San Bruno, police said. At the time, Moses was in jail on an unrelated charge, police said.