Chicago man Michael Gomire, 26, has been charged with attempted murder, Tinley Park police announced Saturday.
The argument happened around 8 p.m. Thursday inside of an L.A. Fitness at 18400 Convention Center Drive in Tinley Park, police said. The altercation then moved to the parking lot.
Gomire allegedly retrieved a gun from his car and shot a man five times, police said.
The victim was taken to a hospital and remains in critical condition, police said.
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No further information was immediately available.