Four people were wounded, including a pregnant woman, in a shooting Friday in Parkway Gardens on the South Side.

About 3:08 a.m. someone came up the back alley stairs of a building in the 6300 block of South King Drive and fired shots into an apartment, according to preliminary information from Chicago police. Two women inside were struck by gunfire.

A 22-year-old who is seven months pregnant was hit in the leg, arm, upper body and is in critical condition, police said. The second woman, 29, was struck in the leg, and her condition was stabilized.

Officers found a 20-year-old man with a gunshot wound to the foot outside the building, and his condition was stabilized, police said.

All three were taken to the University of Chicago Medical Center, police said.

Authorities found another man, 26, with a gunshot wound to the arm in the hallway of the building, police said. His condition was stabilized at Saint Bernard Hospital.

No arrests have been reported as Area South detectives investigate.

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