Blinken's statement marked the first public acknowledgment that the American government had taken action to secure the release of Griner
WNBA star has been detained since February
Detained WNBA star's trial began in Russia on July 1
WNBA star faces up to 10 years in prison
WNBA star detained in Moscow airport in February
The criminal proceedings against Tsvetkova, who faces up to six years in prison, are closed to the press and public
Calls to embassy phone in Moscow went unanswered on Saturday
State Department officials on Monday met with WNBA star's teammates
Consular visit took place on May 19
WNBA star taken into custody at Moscow airport in February
