KHIMKI, Russia (AP) — A lawyer for WNBA star Brittney Griner at her drug possession trial in Russia on Friday gave the court a U.S. doctor’s letter recommending she use medical cannabis to treat pain. Griner faces up to 10 years in prison if convicted on charges of transporting drugs.

“The attending physician gave Brittney recommendations for the use of medical cannabis,” said her lawyer, Maria Blagovolina. “The permission was issued on behalf of the Arizona Department of Health.”

Griner, a two-time Olympic gold medalist and standout for the Phoenix Mercury, was arrested at Moscow’s Sheremetyevo Airport in February after customs officials said they found vape canisters containing cannabis oil in her luggage. In court last week, she pleaded guilty and acknowledged possessing the canisters, but said that she had no criminal intent. She said that they were in her luggage because she packed hastily when returning to Russia to play for the UMMC Ekaterinburg basketball team during the WNBA’s offseason.

In Russia’s judicial system, admitting guilt doesn’t automatically end a trial. Since that plea, her court sessions have focused on in-person and written testimony about her good character and athletic prowess.

The defense on Friday also submitted tests that she underwent as part of an anti-doping check, which didn’t detect any prohibited substances in her system. The next hearing of Griner’s case was scheduled for July 26.

The director and team captain of UMMC Ektaerinburg testified on her behalf on Thursday.