The man told store employees that he already had mortar explosives with him and was planning to use them during the protests to kill officers.

The feds say 48-year-old Grzegorz Vandenberg visited a store in southwestern New Mexico to purchase fireworks and asked employees for the largest explosives possible. He was arrested on Tucson the next day.

A Texas man was arrested last week for allegedly planning to throw fireworks at law enforcement officers during immigration protests in Los Angeles.