Kansas City, Mo ? A North Kansas City man was sentenced to life in prison without the possibility of parole Monday for his role in a 1996 methamphetamine conspiracy that resulted in a fatal meth lab explosion.

Charles Graham, 43, was convicted in December on four counts, including conspiracy, aiding and abetting, creating a substantial risk of harm to human life, and making a building on his property in Blairstown available for use to manufacture methamphetamine.

According to federal prosecutors, an explosion occurred when a spark ignited vapors inside the building during the meth manufacturing process.

An accomplice, David Alexander, was critically injured in the blast and later died at a hospital.

Graham was not charged in Alexander’s death.