They offered him a form of limited immunity in return for disclosing it to them immediately.
The athletes who testified before the grand jury did so with limited immunity from prosecution.
But the limited immunity offered to members of Parliament does not hurt.
Several witnesses had received limited immunity in exchange for their appearances before lawmakers.
The three testified under grants of limited immunity from prosecution.
Hale was the only test subject to survive and therefore developed a limited immunity to the virus.
Colonel North has been granted limited immunity from prosecution based on his testimony.
He said the limited immunity granted the three defendants might interfere with their getting a fair trial on the most serious charges in the case.
At least some athletes were granted limited immunity for their testimony, according to news reports.
Some of them may be offered limited immunity from self-incrimination if they talk about criminal acts.