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Police have been searching the home of shooting suspect Matthew Stewart

Stewart faces charges in the shootings of six police officers; one officer died

His home is a "massive" crime scene, Weber County prosecutor says

CNN  — 

Investigators have found and disarmed a possible bomb in the home of the Utah man suspected of shooting six police officers, one fatally, authorities reported Monday.

“There was a device that was fashioned in a way that concerned those who found it that there were materials that could have been used as a bomb,” Weber County Attorney Dee Smith told reporters.

The Saturday discovery prompted the evacuation of several neighbors as a bomb squad figured out how to disable it, and investigators are trying to determine whether the device involved an actual explosive, he said.

The suspected bomb was found in the home of Matthew Stewart, who could be charged with killing Ogden Police Officer Jared Francom and wounding five others in a Wednesday night raid on his home. Smith said Stewart was under investigation “for numerous offenses,” including aggravated murder, attempted aggravated murder and marijuana cultivation.

Stewart’s home is a “massive” crime scene, Smith said.

“We’ve had crime scene investigators combing through this hour after hour after hour for days, and it’s still being put together,” he said. He said he could release little information Monday, but “there will come a time where everything is released publicly.”

Stewart, 37, was wounded as well. He remained hospitalized and will be arrested when he’s released, Smith said.

Ogden is about 40 miles north of Salt Lake City.

CNN’s Philip Cantor contributed to this report.