Jackson police spokeswoman Colendula Green says the three protesters got into an argument with the guard Wednesday morning after he turned on a sprinkler system and got them wet outside the Jackson Women's Health Organization in north Jackson.
Green says the guard could face three counts of simple assault if the three press charges.
Green says the three were treated at Jackson hospital. She did not have their names.
Groups from both sides of the abortion issue have been demonstrating outside the clinic this week. Tuesday was the 40th anniversary of the U.S. Supreme Court's Roe v. Wade decision.