An Oregon father accused of drugging his daughters 12-year-old friends at a sleepover last summer turned himself in on Wednesday, Lake Oswego Police announced .

Michael Meyden, 57, is facing three counts of causing another to ingest a controlled substance, application of a Schedule 4 controlled substance to another, and delivery of a controlled substance to a minor after detectives determined he allegedly exposed his daughters friends to a prescription drug, police said.

Staff at a local hospital had notified police on Aug. 26, 2023, of three 12-year-old girls whose bloodstreams contained the drug.

Meyden pleaded not guilty to all charges at his arraignment on Wednesday, according to The Oregonian .