CHICAGO (STMW) — Three people–including a teenager–were dead and at least four other people were wounded in separate shootings Friday evening.

About 5:42 p.m., a 17-year-old boy was fatally wounded in a shooting that happened in the Grand Crossing neighborhood on the South Side.

READ MORE: Chicago Weather: A Deep Freeze Takes Effect Overnight For The Chicago Area

The boy and a 42-year-old woman were standing outside in the 7900 block of South Drexel Avenue when someone riding a mountain bike fired shot at them, police said.

Bullets hit the boy in the face and abdomen, police said, and the woman suffered a gunshot wound to the thigh.

Paramedics took the boy in critical condition to John H. Stroger Jr. Hospital of Cook County, where doctors pronounced him dead at 6:18 p.m., according to the Cook County Medical Examiner’s office.

The woman was taken in good condition to Stroger Hospital, police said.

Police said the motive for the shooting remained unclear Friday night, as witnesses were uncooperative with Area South detectives.

The next fatality occurred about the same time as the boy and the woman were wounded. A 30-year-old man suffered a gunshot wound to the chest in the 3000 block of South Wallace Street, police said.

The man was taken in critical condition to Stroger Hospital, where he later died, police said.

Later in the night, a 34-year-old died after he was shot twice in the back in the Chatham neighborhood, police said.

READ MORE: The Best Way To Melt All That Ice

The man was in the 8800 block of South Indiana Avenue when he was shot about 8 p.m., police said.

He was taken to Stroger Hospital, where he later died, police said.

The youngest victim shot Friday night was a 15-year-old girl who was critically wounded in what appeared to be an accidental shooting in the Roseland neighborhood on the Far South Side, police said.

The girl was allegedly smoking pot with a teenage boy in the 0 to 100 block of West 112th Street, police said. The boy moved a gun, which fired and shot the girl in the chest, police said.

Paramedics took the girl on advanced life support to University of Chicago Comer Children’s Hospital at 6:59 p.m., where she was listed in critical condition, authorities said.

Detectives were questioning the boy, but charges were not filed as of Friday night.

About 8:29 p.m., a male was shot in the lower back in the 8000 block of South Paulina Street, police said, adding that he was taken in critical condition to Advocate Christ Medical Center in Oak Lawn.

About 8:37 p.m., a 19-year-old man suffered a gunshot wound to the head in the 7800 block of South Champlain Avenue, police said.

Paramedics took him in critical condition to Stroger Hospital, police said.

MORE NEWS: Detectives Following 'Promising Leads' In Shooting Death Of 8-Year-Old Melissa Ortega, Mayor Says

(Source: Sun-Times Media Wire © Chicago Sun-Times 2012. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed.)