Federal law enforcement officials have reportedly launched a manhunt for a Pennsylvania man who allegedly threatened to “put a bullet” in President Trump. The suspect, identified as Shawn Christy, was reportedly spotted driving in a stolen vehicle in Maryland late Sunday. A warrant has been out for Christy’s arrest since late June, when he allegedly made threats on Facebook against a police chief, several law enforcement officials, a district attorney, and Trump. He also allegedly vowed to use “lethal force” on any police officers who get in his way, according to a statement from the FBI. The U.S. Marshals Service is offering a $20,000 reward for information leading to his arrest. The suspect appears to be the same Shawn Christy who was arrested in 2010 and later pleaded guilty to harassing former Alaska governor Sarah Palin. At that time, he confessed in court to having threatened to rape her and was ultimately sentenced to probation.