The father of Quintonio LeGrier, the 19-year-old man fatally shot by Chicago police as he reportedly charged them with a baseball bat over the weekend, has taken legal action against the city of Chicago.

On Monday, Antonio LeGrier filed a wrongful death lawsuit in Cook County Circuit Court, alleging the officer shot his son without justification, used excessive force and failed to provide medical care as he lay bleeding on the floor.

Antonio LeGrier also sued on grounds of false arrest. He is seeking damages exceeding $100,000.

City officials did not immediately reply to CNN's request for comment on the lawsuit.

Police said officers went to the LeGrier residence early Saturday morning after Quintonio LeGrier, 19, threatened his father with an aluminum bat. Antonio LeGrier called police and then called his downstairs neighbor, Bettie Jones, to open the door when officers arrived, CNN affiliate WLS reported.

Quintonio LeGrier charged down the stairs carrying the bat, police say. Police opened fire, and both Quintonio LeGrier and Jones were fatally shot.

Jones, a mother of five, shouldn't have been shot, police say. She was "accidentally struck and tragically killed" by an officer.