A WikiLeaks volunteer and friend of Chelsea Manning agreed to cooperate with the US Justice Department and appear in front of an Alexandria, VA grand jury in exchange for immunity, reports the Daily Beast. 

"I decided to cooperate in exchange for immunity," said David House - a computer science graduate and political activist who previously refused to testify against Julian Assange in 2011, only to be subpoenaed last May for an encore appearance in front of a grand jury that's been investigating the WikiLeaks founder for almost nine years.

"You know, I'm walking around on the street out here. I'm not in an embassy," he added. 

House spoke briefly with prosecutors and then testified for about 90 minutes in front of the grand jury, he said. "They wanted to know about my meetings with Assange, they wanted to know broadly about what we talked about," he recalled. Prosecutors seemed particularly interested in the potential for collateral damage in some of Assange's leaks. The identities of some American collaborators were exposed in Assange's release of State Department cables and Army field reports from Afghanistan, which triggered internal debate and led to the departure of some of WikiLeaks' key staffers early on. -Daily Beast