SAGINAW, Mich. -- Saginaw police are trying to piece together four shootings in a span of six hours overnight in Saginaw.

The first shooting occurred just before 6:30 p.m. Tuesday when a 15-year-old boy was shot twice in the 4100 block of Lamson Street. Police said the teen was sitting on a porch with some friends when a gold-colored Chevrolet Malibu opened fire.

The victim was alert and the wounds appear to be non-life-threatening.

At 11:30 p.m. police were called to the 1100 block of Union Avenue to investigate a reported shooting.

When police arrived they found a 17-year-old girl with a gunshot wound to the foot. An hour later police were called back to the same residence only to find a 17-year-old boy had been shot.

Both of the victims' conditions are unknown.

The fourth shooting was reported about 12:45 a.m. Wednesday when an 18-year-old from Bridgeport told police that he too was shot around the same location on Union Avenue.

Police said he was driving by the home when he was struck by two bullets. His injuries are non-life-threatening.

Investigators told TV5 they are unsure how and if the shootings are related.

Stay with TV5 and WNEM.com as more information becomes available.