Indiana’s largest teachers union says teachers at an elementary school were shot with plastic pellets during active-shooter training.

Members of the Indiana State Teachers Association told the state Senate’s education committee Wednesday the teachers were left with welts, bruises and abrasions after being struck in January by plastic pellets as a local sheriff’s office conducted the training.

“During active shooter drill, four teachers at a time were taken into a room, told to crouch down and were shot execution style with some sort of projectiles – resulting in injuries to the extent that welts appeared, and blood was drawn,” a tweet from the organization states.

The Indianapolis Star reports the union wants lawmakers to amend a school safety bill to add language that would prohibit teachers from being shot with any sort of ammunition.

Bill sponsor Republican Rep. Wendy McNamara of Evansville seemed amenable Wednesday to some sort of an addition. She says she doesn’t believe “something like that should take place in an active-shooter drill.”