Police arrested four people in Oregon after finding drugs, high-powered weapons and materials for making a fertilizer bomb similar to the one used in the bombing of the federal building in Oklahoma City, officials said Friday.
Corvallis police and county SWAT team officers seized large amounts of fuel oil, ammonium nitrate fertilizer, explosive devices and bomb-making pamphlets during a Wednesday night raid near Corvallis, about 80 miles south of Portland.
Police also found 29 guns, including assault rifles and shotguns, and confiscated methamphetamine and marijuana.
All four people were charged with possession of controlled substances, and two were charged with being ex-convicts in possession of a firearm.
The Oklahoma City federal building bombing last April 19 killed 169 people.