US former intelligence analyst Chelsea Manning has been ordered back to prison after again refusing to testify before an inquiry into Wikileaks.

Manning, 31, was remanded in custody for contempt of court after refusing to give evidence to a grand jury, this comes less then a week after Manning was released from her two-month sentence for an earlier refusal to testify.

Manning was found guilty in 2013 of charges including espionage for leaking secret military files to Wikileaks, but her sentence was commuted in 2017 by then US President Barack Obama.