Federal prosecutors say a neo-Nazi arrested after agents found bomb-making materials in his Florida apartment while investigating the slayings of his two roommates planned to use the explosives to harm civilians, nuclear facilities and synagogues.

Court documents filed Monday say a third roommate arrested in the killings told authorities that 21-year-old Brandon Russell had been targeting the sites.

The murder suspect, Devon Arthurs, was arrested last month after telling police he fatally shot 22-year-old Jeremy Himmelman and 18-year-old Andrew Oneschuk because they were neo-Nazis who disrespected his recent conversion to Islam.

Arthurs told police Russell was not involved in the shootings, but that he was planning a bombing.

The documents also state that police found two rifles, hundreds of rounds of ammunition and a skull mask in Russell’s car.

(AP)