Story highlights James Hodgkinson, 66, from Belleville, Illinois, was shot dead by police

Law enforcement officials said that the investigation into the attack is still active

Washington (CNN) The shooter who attacked a GOP baseball practice in Alexandria, Virginia, last week carried a list with the names of six members of Congress, the FBI said Wednesday, adding that the incident had no connection to terrorism and the shooter acted alone.

The man who carried out the attack, James Hodgkinson, 66, from Belleville, Illinois , was shot dead by police after opening fire, authorities have said. Tim Slater, the special agent in charge of the FBI's Washington field office, said Hodgkinson was known to have "an anger management problem." Hodgkinson maintained a social media presence that was pro-Bernie Sanders and anti-Republican.

The investigation into the attack is still active as police continue to analyze evidence from the scene, authorities said. Slater, who didn't release the names on the list or say which party they belonged to, said the list didn't provide any additional context but said Hodgkinson had researched two of the members online.

An FBI news release said Hodgkinson took multiple photographs of Eugene Simpson Stadium Park, the scene of the shooting, in mid-April. At this point in the investigation, the FBI does not believe that these photographs represented surveillance of intended targets, though the release said the investigation into Hodgkinson's recent activities was ongoing.

Last week, a law enforcement source told CNN that a list of names -- including some Republican members of Congress -- was found with the Alexandria shooter. Rep. Mo Brooks, who was on the list and present at the practice, was unharmed by the shooting.

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