WNBA player Brittney Griner was detained in Russia on Feb. 17 for allegedly being in possession of the THC-laden drug hash oil. At that time, it was revealed that Griner, who was first arrested after officials allegedly discovered the oil in her luggage, was being held in a Russian jail pending her trial.

Amid growing concerns for her safety and her freedom, here are five things you should know about hash oil, sometimes called honey oil, and why she’s in trouble for it.