Former US Army intelligence analyst Bradley Manning, accused of leaking classified documents to Wikileaks, has been acquitted of providing aid to the enemy, but was convicted of several counts of espionage.

Army Judge Col Denise Lind found the 25-year-old Army private guilty of espionage charges, which could result in a sentencing of 136 years behind prison. Manning's attorney, David Coombs said he was pleased by the verdict, but signaled that the decisive moment will come during the sentencing phase of the court-martial, which opens Wednesday and could last several weeks.

Manning had previously accepted responsibility for providing classified information to WikiLeaks, actions covered by ten of the 22 charges.

Military judge Colonel Denise Lind found him guilty of 20 of those 22 charges.