SF. LOUIS COUNTY — An 18-year-old man has been charged in the shooting death of a 92-year-old St. Louis County man. Louis.

Da’Mon Williams, of the 12400 block of Shoreside Drive in Florissant, was charged Friday with second-degree murder and armed criminal action.

Police said Williams shot Robert Prewett three times Wednesday in the 6900 block of Parc Charlene Drive in north St. Louis County. Louis, unincorporated. Prewett’s house was on that block.

Home surveillance video shows Williams leaving the house wearing a mask, glove and jacket before throwing them in a dumpster, police said. DNA on the items matched the suspect, they said.

Parc Charlene Drive is a cul-de-sac off Benham Road and off Lewis and Clark Boulevard.