Police executed search warrants at Heavyweights locations in November. (CBC)

A provincial court judge has ruled that police can hold onto material seized last fall from a local fitness company.

In November, the Royal Canadian Mounted Police executed search warrants at two Heavyweights locations, and the home of owner Rob King.

The RCMP is investigating the company for allegedly shipping ephedrine outside the country.

Previous court filings indicated that the force is also carrying out a "proceeds of crime and money laundering investigation."

No charges have been laid.

In a ruling issued Friday morning, Judge James Walsh said investigators can keep the seized material for another six months.

Meanwhile, a hearing about the legal status of packages intercepted at Canada Post locations last year was pushed back to next month.

From August to October, police intercepted 44 packages of ephedrine containing 44,700 pills mailed to customers all over the United States.

In an interview with CBC News two months ago, King maintained his innocence.

"I’ve done nothing wrong, and I’m getting smeared everywhere for something I didn’t do," he said.

The police investigation is continuing.