Updated

A man who plotted to attack a Seattle military complex with machine guns and grenades has been sentenced to 18 years in prison.

Federal Judge James Robart on Monday also sentenced Abu Khalid Abdul-Latif to 10 years supervised release.

Abdul-Latif previously pleaded guilty to conspiracy to murder U.S. officers and conspiracy to use weapons of mass destruction.

Prosecutors argued for a 19-year prison sentence with lifetime supervision following his release, saying the 35-year-old Abdul-Latif directed major aspects of the planned attack.

Abdul-Latif was arrested June 22, Authorities say he and a co-defendant had discussed how they wanted to gun down people in the Military Entrance Processing Station in Seattle as revenge for atrocities by U.S. soldiers in Afghanistan.