Connecticut police are investigating a shooting that left four injured during a basketball tournament at an elementary school Saturday.

Fox CT reports one man was shot in the head and was in critical condition at St. Francis Hospital. The three other victims suffered non-life threatening injuries.

The shooting occurred around 4:30 p.m. at the second annual Heat On The Street tournament at Sarah J. Rawson Elementary School in Hartford. The tournament is organized by people within the community, the station reported.

There were no extra patrol cars assigned to watch the area because no one informed police the tournament was taking place.

“Absolutely we would have given it extra attention throughout the day, if not have been here directly,” said Deputy Chief Brian Foley of the Hartford Police Department.

Police said it was still unclear who the shooters were, how many shots were fired and if the victims were playing in the games or just spectators. They are still interviewing witnesses and ask if anyone has video from the event to contact them.

Hartford Mayor Pedro Segarra called the shooting “absolutely unacceptable.’ He described the neighborhood around the school as stable.

“I am extremely upset given the number of people that were at this event, mixed ages, for the level of recklessness and violence that occurred here,” said Segarra.

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