HIGHLAND PARK, Mich. - A 37-year-old father irate over hearing his 15-year-old son had sexual contact with a 3-year-old girl made the teen strip at gunpoint, marched him to a vacant lot and shot him to death despite pleas from the boy and his mother, a relative said.

Michigan authorities filed a first-degree murder charge yesterday against Jamar Pinkney Sr. in the shooting death Monday of Jamar Pinkney Jr. in the Detroit enclave of Highland Park.