File Photo – Cary Police Department | Photo: LMCS File

A heavy police response was dispatched in Cary overnight after a gunman or gunmen fired shots and fled on foot, prompting a shelter-in-place alert to residents.

The Cary Police Department sent an alert around 11:40 p.m. Saturday to residents warning them about a heavy police presence in the area of Cary-Algonquin Road and Harper Avenue.

Officers were investigating an incident involving occupants of a vehicle shooting a firearm at another vehicle.

The occupants of the offending vehicle fled the area on foot, police said.

The occupants of the vehicle were described as black males between the ages of 16 and 22.

At least one of the offenders was believed to still be armed with a gun when they fled.

There were multiple police canine units and a drone in the area attempting to locate the offenders, police officials said.

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Residents in the Country Commons, Fox Trails, Sienna Point, Greenfields, Cimarron and Cambria subdivisions were asked to lock their doors and remain inside.

Residents were also asked to call 911 to report any suspicious activity as police converged on the area.

Around 5:30 a.m., police were reported to be executing a search warrant in the area of Main Street and Hampton Street.

The Cary Police Department did not immediately respond to a request for comment on whether officers took any of the suspects into custody.

McHenry County jail records show no suspects have been processed at the jail in connection with the incident.