Online payment provider PayPal has apparently frozen the account of Courage to Resist, a group raising funds to support US Army Pfc. Bradley Manning, the whistleblower accused of passing classified documents to WikiLeaks.

The group said Thursday in a media advisory that PayPal recently chose to freeze its account -- created in 2006 -- after it began soliciting donations to support Manning. The 23-year-old, arrested in May, could face charges of espionage or treason.

He is currently being held in solitary confinement in a Virginia maximum security prison, where he sits alone in a cell for 23 out of 24 hours each day, according to Salon's Glenn Greenwald.

PayPal did not immediately return a request for comment.