Updated at 4:45 p.m. ET
The FBI says the man who opened fire on a group of Republican members of Congress on Wednesday is 66-year-old James T. Hodgkinson of Belleville, Ill., who was shot by police and later died at a hospital.
The alleged shooter expressed fervent opposition to the Republican Party and called for higher taxes on the rich, in statements on social media and letters to a local newspaper. He apparently volunteered for the presidential campaign of Sen. Bernie Sanders, according to the Vermont senator, who condemned the attack.