At least 7 people were shot, two fatally, during a gathering in Yuma, Arizona

At least seven people were shot, two fatally, during a gathering in Yuma, Arizona, late Saturday, police said.

No suspects were in custody Sunday as investigators worked to identify the person or persons who committed the deadly act, police officials said. A $1,000 reward is being offered for information leading to the arrest and prosecution of those responsible, police said.

The shooting unfolded just before 11 p.m. in a residential neighborhood southeast of downtown Yuma, said Lt. Craig Johnson of the Yuma Police Department