Police in Michigan and the FBI are investigating after swastikas were found spray-painted at a Jewish summer camp for kids in South Haven, Mich.

Swastikas were found on signs, picnic tables, a vehicle and at least one building at Camp Agudah in the 68000 block of C.R. 388, according to a news release from the Van Buren County Sheriff’s Department.

The damage was done sometime late Saturday night, July 25, or early Sunday morning, July 26, according to the news release. Police believe at least one person is responsible.

Anyone with information about this incident or other criminal activity are urged to contact the Van Buren County Sheriff’s Office at 269-657-3101. Information that leads to an arrest could be rewarded with money.