KAMLOOPS, B.C. - An Okanagan police officer is suing the RCMP over accusations that he drank on the job.

Const. Milan Ilic has filed a lawsuit alleging his reputation was tainted by the force during an investigation into a 2011 murder in Armstrong, B.C.

The issue came up at trial in 2014, when Ilic denied a defence claim that he had discarded a bottle of booze at the scene where 18-year-old Taylor Van Diest was found beaten on Halloween night.

Ilic was suspended by the Mounties in August 2014 and reinstated in July 2015, but remains on sick leave.

The lawsuit alleges he was diagnosed with post-traumatic stress disorder from the night Van Diest was killed, and suffered from deteriorating health throughout the investigation.

None of the allegations have been proven in court.