Police do not know whether James Hodgkinson planned to target the other individuals on his list.
The gunman who opened fire on Republican congress members at a baseball field in Alexandria, Virginia, critically wounding Rep. Steve Scalise and injuring others, had a list with the names of three other GOP lawmakers on him, law-enforcement officials said on Friday.
Police said it was unclear whether James Hodgkinson planned to target the lawmakers on his list, which included Reps. Jeff Duncan of South Carolina, Trent Franks of Arizona, and Mo Brooks of Alabama.
Officials also found cell-phone pictures of the baseball field where Hodgkinson fired shots, The New York Times reported.
Hodgkinson was killed in an encounter with police who responded to the scene Wednesday morning.
The gunman was believed to have harbored unfavorable views toward Republicans at large, including President Donald Trump.
Hodgkinson posted content favorable to Democratic presidential candidate Bernie Sanders on his social media accounts and signed a Change.org petition for the removal of Trump and Vice President Mike Pence.
"Trump is a Traitor. Trump Has Destroyed Our Democracy. It's Time to Destroy Trump & Co.," Hodgkinson wrote in a March 22 post.
Democratic and Republican lawmakers have roundly condemned Hodgkinson's actions and called for a moment of unity immeidately after the shooting.