The hunt continues Monday for a man suspected of stealing firearms from a Wisconsin gun store who sent an anti-government manifesto to President Donald Trump and has threatened to carry out an unspecified attack, sheriff’s officials said.

Joseph Jakubowski, 32, has been missing since Tuesday, when authorities believe he stole a large quantity of handguns and rifles from the store in Janesville, 70 miles (110 kilometers) southwest of Milwaukee. He also acquired a bulletproof vest and helmet, and a burned vehicle registered to him was found nearby.

Concerns ramped up late last week when a friend of Jakubowski gave a copy of the 161-page manifesto to police and said the suspect had also sent it to the White House. The Rock County Sheriff’s Office said Jakubowski also expressed anti-religious views in the document, and increased patrols near churches in the area Sunday.

“When you look at the document that he wrote, it’s really a long laundry list of injustices he believes that the government and society and the upper class have put forth onto the rest of the citizens,” Sheriff Robert Spoden said last week.