A federal judge has rejected Terry Nichols' motion for a new trial in the Oklahoma City bombing, saying he is satisfied that jurors deliberated responsibly and returned a unanimous verdict.

Nichols' attorneys had said deliberations were contaminated because two jurors admitted conversing about the case privately, which violated the judge's instructions.But U.S. District Judge Richard Matsch rejected that argument Tuesday, noting the jurors were confined to an exclusive space in the courthouse during their work. "There is nothing to indicate that any jurors discussed this case outside of the courthouse," he wrote.

Nichols, 43, was convicted of involuntary manslaughter and conspiracy but was acquitted of murder and weapons charges in the April 19, 1995, bombing of the Alfred P. Murrah Federal Building. The blast killed 168 people and injured hundreds.