(WXYZ) - Crime Stoppers is offering a $10,000 reward in a Greektown homicide on June 30.
Witnesses on a pedestrian walk heard several shots and watched people scramble for cover.
One man died and a second man was beat up when he tried to help the victim.
Detroit police have released pictures of five or six people they say are involved in the murder and assault.
They've also released surveillance pictures of a light colored Ford Ranger, a dark Chevy Impala and white Caravan.
If you have any information, call Crime Stoppers at 1-800-SPEAKUP.