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BALTIMORE (WUSA9) -- A former employee of an agency that provides services to individuals with disabilities was sentenced for striking a man in his care at the doctor's office on Monday.

According to Attorney General Doug Gansler, 54-year-old Ronald G. Barnes was convicted of second-degree assault after a trial in the Circuit Court for Baltimore County. On Monday, he was sentenced for the crime. A judge sentenced Barnes to five years in jail with all but 90 days suspended. Once he serves his time, Barnes will be placed on supervised probation for three years. He will not be able to have contact with vulnerable adults or adults with disabilities.

Barnes was employed as a driver/medical runner for L.I.F.E., Inc., which provides residential, employment and day services to individuals with disabilities, on Dec. 6, 2012.

According to Gansler, medical staff reported that Barnes spoke harshly to the 63-year-old man he had taken to treatment at an Owings Mills medical office before they saw Barnes strike the victim on the arms and head. There were no visible injuries but employees were disturbed enough by the incident to file a formal complaint to L.I.F.E., Inc.

The Baltimore County Police Department and the Office of the Attorney General's Medicaid Fraud Control Unit then investigated the incident and charges were brought against Barnes.