A man was shot and killed Saturday night outside a Walmart store in northwest suburban Waukegan.

Police say the shooting occurred in the parking lot of the Walmart at 8400 W. State Street about 7:15 p.m.

Saturday.

No one else was injured.

Walmart spokeswoman Debra Klima said the shooting was a “manhunt” and that the store is closed.

Walter Williams Jr., 51, was taken into custody after a short foot chase in the area.

Williams’ mother, Jennifer Williams, said her son had a history of mental health problems and that he had been diagnosed as bipolar, but did not provide details about that diagnosis.

Walton County sheriff’s Sgt. Scott Wylie said a warrant was issued for Williams’ arrest on Friday.

He declined to elaborate.