A massive search continued Sunday for a man suspected in the fatal shooting of Minnesota state Rep. Melissa Hortman and her husband, and a separate shooting attack on another state lawmakers and his spouse, authorities said. The manhunt for 57-year-old Vance Boelter stretched into its second day following Saturday’s twin attacks in Champlin and Brooklyn Park, Minnesota, and the discovery in the suspect’s vehicle of an alleged target list of dozens of Minnesota Democrats, including Gov. Tim Walz, U.S. Rep. Ilhan Omar, U.S. Sen. Tina Smith and state Attorney General Keith Ellison, according to law enforcement sources. The FBI is offering a $50,000 reward for information leading to Boelter’s arrest.

“Right now we are asking the public if you do locate him, if you see him, to call 911. Do not approach him. You should consider him armed and dangerous,” Superintendent Drew Evans of the Minnesota Bureau of Criminal Apprehension said at a Saturday-evening news conference. The suspect’s wife was detained for questioning after a traffic stop near Onamia late on Saturday morning, multiple law enforcement sources told Minnesota ABC News affiliate KSTP. She was released without being arrested, according to KTSP, which reports it’s unknown why her vehicle was stopped. Boelter is suspected of gaining entry to the lawmakers’ homes by disguising himself as a police officer, even arriving at the victims’ home in a vehicle that looked like a police cruiser equipped with flashing emergency lights, officials said.