Police officer suspect in drug sting.

A Stockton police officer was arrested in a sting Thursday night on suspicion of trafficking steroids, the Police Department reported Friday.

The officer, 26-year-old Darrin Fagundes, was arrested around 9:10 p.m. in a Tracy parking lot, along with Anthony Scott Kubena, 38.

Both were booked into the San Joaquin County Jail on suspicion of possession for sale of a controlled substance, a felony.

The investigation of Fagundes was an internal investigation by the Stockton Police Department, said Officer Pete Smith, a police spokesman.

Fagundes, hired in 2007, has been placed on administrative leave.

Smith said there is no evidence that the investigation, still ongoing, will reach further into the Police Department's ranks. Smith also said he did not know exactly what Kubena's part was.

"He was involved in the transaction (Thursday) taking place during the arrest," Smith said.