CHICAGO (WLS) -- A $10,000 cash reward is being offered to anyone who can help police find the person responsible for a mass shooting on the Southwest Side.
The shooting happened December 2 in the Chicago Lawn neighborhood.
Three people were killed and five others injured when someone opened fire during a party at a house on 59th Street, Chicago police said. Eight people were shot in total, four men and four women ages 20 to 35.
READ MORE | 3 killed in Chicago Lawn mass shooting ID'd, 5 others wounded; CPD hosting Emergency Center
The Cook County Medical Examiner's Office has identified the deceased victims as 32-year-old Osmer Angel Ferrer Oria, 28-year-old Jon Carlos Blancarcer, and 26-year-old Hector M. Sajo.
Investigators still have not determined what led to the deadly gunfire.
Any one with information has been asked to call Cook County Crime Stoppers at 1-800-535-STOP, or the Chicago Police Department at 833-408-0069.
INTERACTIVE SAFETY TRACKER Track crime and safety in your neighborhood