A woman was stabbed and later died, and an off-duty police detective who witnessed the attack suffered a gunshot wound, in the Portage Park neighborhood Tuesday afternoon.The attacker was also later found dead.

The chain of events alarmed neighbors in the Northwest Side's Portage Park neighborhood. Darius Johnson reports.

An investigation is underway on Tuesday afternoon after an off-duty Chicago police officer was injured in a shooting and a second person was fatally stabbed on the city’s Northwest Side. According to Chicago fire officials,

The detective suffered a graze wound to the leg while trying to stop the attacker, but police did not specify if the attacker had a gun or shot the detective. Darius Johnson reports from Portage Park.