Ottawa police have charged an elderly patient at a long-term care home with the murder of a fellow resident last fall.

Peter Lee, 85, was arrested and charged with second-degree murder on Wednesday, six months after an 88-year-old man was found dead in his room at the Peter D. Clark Long-Term Care Home on Meridian Place in Ottawa on Oct. 21, 2009.

An autopsy confirmed Frank Moir's death was the result of a homicide. However, police will not disclose the circumstances of his death.

At the time, Moir's son told CTV Ottawa his father suffered from dementia, but the disease did not make him an aggressive person.

Police said the charges were laid this week after receiving the results of forensic evidence in the case, which often takes months to process.

The Peter D. Clark Long-Term Care Home is the largest of the city's long-term care facilities, with 211 beds.