Indianapolis police say three children were injured Saturday when lightning struck at a Reform Jewish summer camp on the north side of the city, including one child who was critically hurt.

According to NBC News, emergency crews responded to the Goldman Union Camp Institute, a reform Jewish camp near Zionsville, Ind., at around 1:40 P.M. By the time emergency services arrived, camp counselors had already begun lifesaving efforts, said local police cited in the report.

According to NBC News, the three victims included a 9-year-old girl from Missouri, a 9-year-old boy from Kentucky, and a 12-year-old boy from Ohio.

It wasn’t immediately clear which of the children was in critical condition.

Officer Kendale Adams said the critically injured child was taken to Indianapolis St. Vincent Hospital, while the other two, in stable condition, were taken to Riley Hospital for Children.

Rabbi Mark Covitz, the camp’s director, said in a message published by JTA that the camp had contacted the injured children’s parents and resumed its normal camp schedule Saturday night.