An internal Ottawa Police Service trial has ordered an officer to resign in seven days or face dismissal.

Const. Harinderpal Mamak was found guilty in September 2009 of breach of confidence and insubordination in connection with an incident in which police say he illegally used the Canadian Police Information Centre.

Mamak was accused of looking up the licence plate of an undercover car used by York Regional police in Project Big Al, a surveillance operation aimed at East Indian gangsters in Toronto. The suspects were later convicted of smuggling heroin and weapons.

Ottawa police acting superintendent Terry Cheslock said Mamak's actions compromised the safety of investigators from a sister police department and divulged "confidential information relating to an ongoing criminal investigation in the Toronto area."

Cheslock said Mamak had opportunities to admit to wrongdoing and try to make amends, but chose not to.

"As a result of that, the Ottawa Police Service reputation was called into question," said Cheslock.

"Having learned the circumstances, we initiated an investigation, and as result of what was learned in that investigation, the decision was made to seek his dismissal."

Mamak has been suspended from duty with pay since Dec. 12, 2007. He has 30 days to appeal the decision with the Ontario Civilian Police Commission.