MOSCOW (NewsNation) — American WNBA star Brittney Griner pleaded guilty in a Russian court on Thursday to drug charges that could see her face 10 years in prison, a Reuters journalist reported from the courtroom.

“I’d like to plead guilty, your honor. But there was no intent. I didn’t want to break the law,” Griner said, speaking English which was then translated into Russian for the court.

“I’d like to give my testimony later. I need time to prepare,” she added.

The next court hearing was scheduled for July 14.

Griner was detained in February at Moscow’s Sheremetyevo Airport after vape canisters with cannabis oil allegedly were found in her luggage. She faces up to 10 years in prison if convicted of large-scale transportation of drugs.

The trial of the Phoenix Mercury star and two-time Olympic gold medalist began last week, but the second session was adjourned because two scheduled witnesses did not appear. Such delays are not uncommon in Russian courts and her detention has been authorized through Dec. 20, suggesting the proceedings could last months.

It was unclear if Griner would testify Thursday.

Although Griner’s supporters initially kept a low profile, calls for the United States to take action spiked after the trial’s first day.

The State Department has designated her as wrongfully detained, moving her case under the supervision of its special presidential envoy for hostage affairs, effectively the government’s chief hostage negotiator.

However, Washington hasn’t made public its strategy in the case and the U.S. may have little leverage with Moscow because of strong animosity due to Russia’s military actions in Ukraine. The White House said President Joe Biden called Griner’s wife on Wednesday to assure her that he’s doing all he can to obtain the athlete’s release, as soon as possible. They spoke after Biden read a letter from Griner in which she said she feared she’d never return home.

“I’m frustrated. I’m frustrated that 140 days have passed since my wife has been able to speak to me, to our family and to our friends. I’m frustrated that my wife is not going to get justice,” Brittney’s wife Cherelle Griner said.

At a rally at the Phoenix Mercury Stadium, Cherelle nearly broke down expressing her heartbreak and urging the crowd to stay on top of the story, even if it takes months.

The Rev. Al Sharpton, one of America’s most prominent Black activists, this week called for Biden to arrange a prayer meeting with Griner, saying, “Four months is too long for this to have gone on, and I hope the president acts on her pleas to come home.”

An organization called Win With Black Women sent Biden a letter saying Secretary of State Antony Blinken “has called Cherelle Griner, Brittney’s wife, assuring her and stating publicly that Brittney’s safe return was a matter of personal priority; however, we are concerned that the rhetoric does not appear to align with the actions taken to date. We urge you to make a deal to get Brittney back home swiftly.”

“(President Biden) receives daily updates about the status of her negotiations to secure Brittney’s release and the U.S. Government continues to work aggressively using every available means to bring her home along with other wrongfully detained Americans,” White House press secretary Karine Jean-Pierre said.

Russian news media have repeatedly speculated that Griner could be swapped for Russian arms trader Viktor Bout, nicknamed “the Merchant of Death,” who is serving a 25-year sentence in the U.S. on conviction of conspiracy to kill U.S. citizens and providing aid to a terrorist organization.

Russia has agitated for Bout’s release for years. But the wide discrepancy between Griner’s alleged offense and Bout’s global dealings in deadly weapons could make such a swap unpalatable to Washington.

Others have suggested that she could be traded along with Paul Whelan, a former Marine and security director serving a 16-year sentence in Russia on an espionage conviction that the U.S. has repeatedly described as a setup.

Russia has shown no signs of backing off.

“This is a serious offense, confirmed by indisputable evidence … Attempts to present the case as if the American was detained illegally do not hold up,” Foreign Ministry spokesman Alexei Zaitsev said Wednesday.

“The law has been violated, and arguments about the innocent nature of Griner’s addiction, which, by the way, is punishable in some U.S. states, are inappropriate in this case,” he said.

Griner’s lawyer has suggested this trial could last through the winter.

The Associated Press and Reuters contributed to this report.