Friday, June 5, 1998 Published at 02:07 GMT 03:07 UK
Life sentence for Oklahoma bomber
An artist's impression of Terry Nichols (left) in court with his lawyer Michael Tigar
The co-defendant in the trial for the bombing in Oklahoma in 1995, Terry Nichols, has been sentenced to life imprisonment in a Denver court, without the option of parole.
Nichols, 43, was also found guilty on a second charge of involuntary manslaughter, relating to the deaths of eight federal agents who died in the explosion.
At his trial, which ended in December, the jury had been unable to agree on the severity of his punishment, leaving the decision to the judge.
In 1995 Nichols had helped his old army colleague, Timothy McVeigh, build the truck bomb which destroyed the Alfred P Murrah building in the worst act of terrorism in American history.
Judge Richard Matsch described Nichols as "an enemy of the Constitution".
There were hints in court that Nichols might receive a lighter sentence in return for providing information about the bombing, particularly about a third suspected conspirator whom several witnesses claimed to have seen.
After hearing emotional testimony from relatives of victims on how their lives had changed forever, Judge Matsch said the former farmhand should remain in prison for the rest of his life.
But according to BBC correspondent Stephen Sackur, the police have followed up all the available evidence that might have led to other convictions. After Nichols's silence today, it seems unlikely that he will reveal any more.
Nichols still faces a further charge of murder brought by the Oklahoma state authorities, which carries a possible death penalty.
McVeigh, the main defendant, has already been sentenced to death for the bombing, and has appealed against the sentence.