Officers responding to a ShotSpotter call in Uniondale late Tuesday found shell casings on the ground, but were unable to find the shooter -- or shooters.

Nassau County police said the casings were found on Adams Street and Nassau Road by First Precinct patrol officers responding to a ShotSpotter notification on Nassau Road at 10:25 p.m. No property damage or injuries were reported.

A canvass of the area found a witness who "reported hearing a group of males arguing" before hearing "several shots in the area," police said.

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Police said all of the suspects fled on foot north toward Uniondale Avenue.

Police ask anyone with information to call Crime Stoppers at 800-244-TIPS. All calls will remain confidential.