Uber says that Lamo later called him from the meeting, regretting his decision to inform on Manning.

FORBES: Stealthy Government Contractor Monitors U.S. Internet Providers, Worked With Wikileaks Informant

Manning was turned in by Adrian Lamo, a former hacker, whom Manning allegedly told about leaking the classified records.

CNN: STORY HIGHLIGHTS

Self-confessed computer hacker Adrian Lamo told the world's media how Pte Manning had confessed to the data theft during conversations they had on the internet.

BBC: Profile: Bradley Manning

Mr Lamo says he went to the authorities with the messages.

BBC: Profile: Bradley Manning

Lamo says he began exploring options for contacting federal agents just days after Manning began communicating with Lamo over instant messenger and told Lamo about his whistle-blowing releases.

FORBES: WikiLeaks Informant Lamo: I Would Have Leaked Helicopter Attack Video, Too