MOSCOW (AP) — A Russian court on Tuesday started hearing American basketball star Brittney Griner’s appeal against her nine-year prison sentence for drug possession.

Griner, an eight-time all-star center with the WNBA’s Phoenix Mercury and a two-time Olympic gold medalist, was convicted Aug. 4 after police said they found vape canisters containing cannabis oil in her luggage at Moscow’s Sheremetyevo Airport.

Griner is taking part in the session via video call from a penal colony where she is being held.