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SAN DIEGO — A San Diego pediatric nurse faces federal charges for repeatedly molesting a 2-month-old foster baby placed in his care, the FBI said Wednesday.

FBI agents arrested Michael Williams Lutts, 50, on Tuesday at his home on the 4900 block of Tierra Baja, while executing a federal search warrant, according to agency spokesman Special Agent Darrell Foxworth. At the home, agents found a cell phone containing images and videos of Lutts performing sexual acts on the infant, Foxworth said.

“The images were very disturbing.” said Foxworth. “During a review of that cell phone they unfortunately found images in the video of Mr. Lutts engaged in sexual molestation of this 2-month-old child that was in his custody.”

Lutts, a foster parent, was given custody of the prematurely born baby on Aug. 4, investigators said. He apparently began document documenting acts of molestation with the cell phone on that date, Foxworth said.

FBI agents identified Lutts while investigating another person accused of distributing child pornography. They determined that Lutz sent child pornography images to the person they were investigating.

Agents searching Lutts residence seized several computers, hard drives, hundreds of CDs and other items containing hundreds of child pornography images and videos, Foxworth said.

Fox 5 has learned that Lutts worked for Kaiser Permanente. The hospital issued a written statement saying, “We are cooperating fully with the authorities during their investigation. We have no information from law enforcement indicating any Kaiser Permanente patients were involved. The employee will not be returning to work pending the outcome of the investigation and any criminal proceedings.”

Because of his position as pediatric nurse, the FBI is asking anyone with information or who may have been a victim to come forward.

Lutts was in custody at the federal jail in downtown San Diego.

Investigators said that because Lutts is a pediatric nurse, there may be other victims. Anyone with information about other possible cases involving Lutts was asked to contact the FBI at 858-320-1800.