General Secord decided to waive his rights and testify voluntarily.

The President refused six invitations to testify voluntarily before the grand jury.

Mr. Martin further called on all politicians and bureaucrats who have information about the payments to come forward to testify voluntarily.

When someone comes to testify voluntarily, you want to treat him gently at first.

You asked him questions about his participation in that organization, and he clearly voluntarily testified.

All five of the officers testified voluntarily before the grand jury without immunity from prosecution.

On the twenty-ninth, I agreed to testify voluntarily and the subpoena was withdrawn.

Defense lawyers said that many people willing to testify voluntarily have nonetheless been detained.

Danneels voluntarily testified in court, but denied that he had known anything about the abuse.

Later he broke teamsters precedent and testified voluntarily before a Congressional committee.