DENVER: A lone gunman shot four people to death and wounded three, including a police officer, on Monday in a Denver-area shooting spree that unfolded at several locations and ended with police killing the suspect, authorities said.

Investigators have yet to determine a motive for the rampage, which began around 5 p.m. when the gunman shot and killed two women and wounded a man near downtown Denver, Police Chief Paul Pazen said a news briefing.

The suspect then fled in a car and fatally shot a man in east Denver’s Cheesman Park neighborhood, before opening fire again in a west Denver community where no one was hit, Pazen said. According to Pazen, the suspect twice exchanged gunfire from his vehicle with Denver officers pursuing him, disabling a police cruiser.

From there, the gunman drove into the neighboring city of Lakewood, where he shot and killed a fourth person inside an unspecified business, according to Lakewood Police spokesman John Romero.

The gunman fled from Lakewood police when they attempted to pull him over and engaged in a running gun battle with officers before fleeing on foot and entering a hotel, where he shot and wounded a clerk, Romero said.