Updated

A retired pharmacist has been arrested on charges he put poisonous mercury in cafeteria food at an upstate New York hospital.

Martin Kimber, 59, was arrested for allegedly putting the mercury in food at the Albany Medical Center cafeteria, the Times Herald-Record reports.

Investigators were led to Kimber after a joint investigation by the FBI, the Town of Ulster Police Department, Albany Medical Center, the state police, and the State Health Department, according to the paper.

Albany Police Officer Steve Smith told the Times Herald-Record  that Kimber was once a patient at the Albany hospital and went to a pharmacy school in the area. No motive has been found for the incident, Smith said.

Kimber is being charged with first-degree tampering with a consumer product, a felony.

Click for more on this story from the Times Herald-Record