A five-year investigation into fraud, forgery and money-laundering allegations surrounding the development of the new Winnipeg police headquarters has ended with a decision to not lay charges.

The Manitoba Justice prosecution branch says based on all available evidence, criminal charges are not being authorized.

The project to convert the former downtown Canada Post terminal went tens of millions of dollars over budget and led to the RCMP raiding the construction company's offices.

Mayor Brian Bowman has been calling for a provincial inquiry, but the Pallister government has said it wouldn't consider one during the criminal investigation.