RIVERSIDE, Calif. (AP) — Three girls at a Southern California school for the deaf have been hospitalized after eating marijuana brownies. The Riverside Press-Enterprise (http://bit.ly/1kxFjtO ) says the girls, who attend California School for the Deaf, Riverside, became sick on Wednesday after eating the brownies. They were treated at a hospital. The school is for hard-of-hearing students in grades from kindergarten through 12th grade. School officials say they're investigating the incident.