Newark police are trying to determine what caused a weekend street shooting that left four people wounded, including a 66-year-old woman who happened to be driving by the scene.

Two teenage brothers and a 29-year-old woman were also wounded in the shooting, which occurred around 7 p.m. Sunday. It happened just two blocks from the police department's $68 million headquarters building that's scheduled to open next month.

Authorities say the younger woman and the brothers -- ages 15 and 17 --were all shot multiple times. The woman was struck in both legs and her right arm, while the 17-year-old was shot in his right leg and buttocks.

The 15-year-old was shot in the right leg, right arm and torso, while the older woman was hit in the hand.

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