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.

Paramedics responding about 2:20 p.m. to the 5600 block of West Leland Avenue found the woman stabbed to death and the man suffering from a gunshot wound, Chicago Fire Department officials said.

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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.