SAGINAW (AP) — A 51-year-old woman and a 19-year-old man were slain and a dozen others wounded during a shooting at a large street party that was promoted on social media.

The shooting occurred around midnight Saturday in Saginaw, about 100 miles northwest of Detroit, state police said.

Police initially said about 200 people were in the area of the party and that officers had been dispersing the crowd prior to the shooting, MLive.com reported.

Three people also were struck by cars and injured as people quickly fled from the gunshots, WNEM-TV reported. Investigators determined five guns had been fired in the shooting.

No arrests were made by press time on Sunday, according to the Associated Press.