Iowa ? Several members of a high school swim team were suspended after they impaled 15 car antennas with fetal pigs and smeared crawfish on hoods and windshields in their rival school’s parking lot, their coach said.

Roosevelt High School swim coach Steve Teter said members of his team retaliated after Dowling Catholic High School swimmers lobbed snowballs at them at an earlier meet.

The incident was discovered Tuesday.

“You could smell the formaldehyde from a block away,” Dowling Assistant Principal Ron Meyers said.

The pigs likely were stolen from a biology lab. Roosevelt Principal Kathie Danielson said pig fetuses aren’t labeled and the school doesn’t keep inventory, so science teachers “can’t be sure” they came from Roosevelt.