Search for 57-year-old Vance Luther Boelter, charged with killing Democratic politician Melissa Hortman and her husband, enters a second day.

A massive search in the United States for a man who authorities say posed as a police officer and fatally shot a Democratic state lawmaker in Minnesota has stretched into a second day, with the state’s governor calling it “a politically motivated assassination”.

The suspect, identified as 57-year-old Vance Luther Boelter, also allegedly shot and wounded a second Democratic lawmaker and his wife, according to law enforcement officials and the FBI.

The large-scale manhunt entered its second day on Sunday after Boelter allegedly killed former Minnesota House Speaker Melissa Hortman and her husband, Mark, at their home in Brooklyn Park, a suburb of Minneapolis city, early on Saturday.

Boelter is also accused of shooting and wounding Senator John Hoffman and his wife, Yvette, at their home about 15km (9 miles) away in the nearby town of Champlin.

The suspect abandoned a vehicle that looked like a police SUV and fled on foot after firing at police at Hortman’s home, authorities said, adding that officers found a “manifesto” and a target list of other politicians and institutions in the vehicle.

Boelter should be considered armed and dangerous and is believed to still be in the Minneapolis-St Paul area, Minnesota Bureau of Criminal Apprehension Superintendent Drew Evans told a news briefing, adding that it was too soon to determine a motive.

The FBI issued a reward of up to $50,000 for information leading to his arrest and conviction.

Boelter, a former political appointee, served on the same state workforce development board as Hoffman, though it is unclear if or how well they knew each other. An online resume describes him as a security contractor with experience in the Middle East and Africa, along with past managerial roles in Minnesota companies.

A Minnesota official told The Associated Press news agency on condition of anonymity that Boelter’s writings contained information targeting prominent lawmakers who have championed abortion rights.

According to the Minnesota Star Tribune, Boelter sent texts to friends hours after the shootings, saying he had “made some choices” and adding: “I’m going to be gone for a while. May be dead shortly, so I just want to let you know I love you guys both and I wish it hadn’t gone this way … I’m sorry for all the trouble this has caused.”

‘Stand against political violence’

Hortman, a mother of two who had served 20 years in the Minnesota House of Representatives, was remembered by Minnesota Governor Tim Walz as someone with “grace, compassion and tirelessness”.

Walz, who was Kamala Harris’s Democratic vice presidential running mate in last year’s presidential election, said the attacker went to the Hortmans’ residence after shooting the Hoffmans multiple times in their home in Champlin.

“We must all, in Minnesota and across the country, stand against all forms of political violence,” said Walz, a Democrat. He also ordered flags to fly at half-staff in Hortman’s honour.

“Such horrific violence will not be tolerated in the United States of America. God Bless the great people of Minnesota, a truly great place!” President Donald Trump said in a statement.

The shootings happened at a time when political leaders nationwide have been attacked, harassed and intimidated amid deep political divisions in the US.

In April, a suspect set fire to the home of Democratic Pennsylvania Governor Josh Shapiro, forcing him and his family to flee during the Jewish holiday of Passover. The suspect said he planned to beat Shapiro with a small sledgehammer if he found him, according to court documents.

In July 2024, Trump was grazed on the ear by one of a hail of bullets that killed one of his supporters. Two months later, a man near Trump’s Florida golf course with a rifle was discovered and arrested.

Other incidents include a 2022 hammer attack on the husband of then-House Speaker Nancy Pelosi in their San Francisco home and a 2020 plot by antigovernment hardliners to kidnap Democratic Governor Gretchen Whitmer and start a civil war.

Senate Democratic Leader Chuck Schumer said he asked Capitol police to “immediately increase security” for Minnesota Democratic Senators Amy Klobuchar and Tina Smith.