A 16-year-old boy was shot in the shoulder by a person in another car on Moanalua Freeway yesterday, police said.

The boy was taken to The Queen's Medical Center with a gunshot wound in his left shoulder. The incident was reported at 1:54 a.m.

Police said the boy was a front-seat passenger in a vehicle driven by a man, 22. They were traveling west on Moanalua Freeway when a masked person in another vehicle fired four shots at them.

Police said the incident might be related to a June 29 incident in which shots were fired at a pickup truck at 1:40 a.m. by people in three vehicles. No one was hurt.