Police in Hartford, Connecticut, were investigating a shooting near an elementary school Saturday that injured at least four people, one critically. Authorities were still reviewing evidence and looking for the suspected shooter -- or shooters -- as of 6:30 p.m.

WVIT, Hartford, reported several bystanders called 911 at about 4:30 p.m. from Sarah J. Rawson Elementary School, where a community-organized basketball tournament was underway. Police did not know about the basketball tournament and weren’t sure how many people were involved in the shooting or even how many shots were fired.

After the incident, four victims were transported to the St. Francis Hospital. Three had nonlife-threatening injuries, but one was shot in the head. All were men, WFSB, Hartford, reported.

The shooting did not immediately appear to be a targeted incident, WVIT reported. Police were asking locals with video footage or additional information about Saturday’s shooting to contact them at 860-757-4000. 

In 2013, public policy website Law Street Media ranked Hartford No. 4 on its list of most dangerous small cities in the United States. It found the crime rate was about 1,321 per 100,000 residents.

Rawson Elementary School is part of the Hartford Public Schools system, which ended its academic year June 18. It has about 500 students, according to Niche.

A teenager was shot in the leg on the Rawson playground in March 2007. School wasn't in session then, either, but basketball players were still in the gym, the Hartford Courant reported. At the time, the principal asked for increased police patrols in the area.

As police attempted to figure out what happened there on Saturday, locals took to Twitter to react and discuss the shooting. See some of their messages below: