The trial for Brittney Griner, a WNBA star who has been detained in Russia for more than four months on drug charges,

U.S. Embassy officials are on hand for the trial. Press access is tightly controlled, but a crowd of journalists crammed together to catch a glimpse of Griner,

, in handcuffs and a Jimi Hendrix T-shirt, being escorted by guards into the courtroom at Khimki City Court, just outside of Moscow.

During Friday's hearing, Griner was not asked to declare her innocence or guilt. That phase of the legal process will come later.

Griner was arrested on Feb. 17, after authorities at a Moscow area airport allegedly found cannabis vape cartridges in her luggage.

She could face up to 10 years in prison if she's convicted of drug smuggling charges. At Friday's court session, prosecutors unsealed their case against Griner.

Russian state news agency Tass, which had a staff member in the courtroom, reported that the indictment alleges that before traveling to Russia

in February, Griner "bought two cartridges for personal use, which contained 0.252 grams and 0.45 grams of hash oil."

A security inspection allegedly uncovered the cartridges in the basketball star's luggage when she arrived on a flight from New York to Sheremetyevo International Airport in Khimki.

Two witnesses testified for the prosecution — customs agents who were working at the airport when Griner's bags were inspected, Griner's lawyer,