A third-grade teacher in Port St. Lucie was arrested Monday after police found syringes and used heroin capsules in his possession at school, according to an arrest report.

Patrick John McLaughlin, 27, is facing two counts of possession of drug paraphernalia and is being held in the St. Lucie County Jail.

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Police received a tip that McLaughlin, a teacher at Renaissance Charter School, goes to work "high" and brings syringes to school with him, the report said.

Port St. Lucie detectives searched McLaughlin’s classroom desk and found a used heroin capsule. Detectives also found a used heroin capsule in the trash can under the same desk and two syringes in McLaughlin’s pants pocket.

Both capsules had heroin residue on them, the report said.

McLaughlin allegedly admitted he used the syringes to inject heroin.