San Francisco police arrested a juvenile Sunday on suspicion of killing a man in the Mission District last June.
Officers responded to Dolores Park after 10 p.m. on June 5, police said, and found a man with a gunshot wound lying on the ground. Emergency responders attempted life-saving care for the man, but he was pronounced dead at the scene, police said.
Supervisor Rafael Mandelman, whose district includes the park, said the victim was 19 years old, in previous Chronicle reporting. The victim has not been publicly identified…