Toronto police have raided several shops they allege are trafficking marijuana.

Const. Caroline de Kloet says the drug squad executed numerous search warrants at 12 p.m. Thursday alongside members from the city's municipal and licensing standards investigative service.

She says the raids are part of Project Claudia, an investigation into stores they say operate outside the country's medical marijuana regulations.

De Kloet says Chief Mark Saunders will hold a news conference Friday with details of the raids, including charges laid and amount of marijuana seized.

Mayor John Tory had promised a crackdown on the proliferating marijuana dispensary scene in the city.

Prime Minister Justin Trudeau says marijuana will be decriminalized, but the laws won't change until next year.