NORMAN, Okla. (AP) — More than 20 medical marijuana rules recently adopted in Oklahoma will stay in place after a judge shot down a court challenge seeking to block them from being implemented.

Cleveland County Judge Michael Tupper on Tuesday ruled against a legal petition asking for an emergency injunction on 21 medical marijuana regulations approved this month. Tupper said petitioners didn't show "at this point" that the Oklahoma Board of Health overstepped its authority in imposing restrictions on State Question 788, which voters passed in June to legalize medical marijuana.

"There's a lot...