Three teens were arrested in a street robbery late Monday in Riverhead that sent the victim to the hospital for treatment of non-life-threatening injuries, police said.

The trio was arrested following a K-9 unit search of the area, Riverhead Town police said. One suspect had a loaded gun, police said.

Police said officers responded to a robbery call at Osborne Plaza on Osborne Avenue at 10:05 p.m.

The victim, whose identity was not released, reported “several subjects assaulted him” and then “forcibly removed” cash and credits cards from him, police said.

Police said officers then used a K-9 unit to track the suspects, identified as Gino A. Florian, 17, of Riverhead; Joseph Russo, 17, of Riverhead; and Tavares A. Redd, 16, of Riverhead.

All were charged with second-degree robbery and third-degree criminal trespass. Police said Florian and Redd also were each charged with criminal possession of stolen property.

Florian was found with a loaded gun and was also charged with second-degree criminal possession of a weapon, police said.

Police said the victim was treated at Peconic Bay Medical Center. The extent of any injuries were not known.

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Arraignment details also were not available.

Police said the investigation of the robbery is continuing and anyone with information is asked to call police at 631-727-4500.

All calls will remain confidential.