Trump gunman had carried out internet searches on Biden and other public figures

Secret Service under mounting pressure over security arrangements as it emerges police had spotted Thomas Crooks an hour before the shooting

Secret Service agents flank former president Donald Trump as he walks to the stage shortly before the assassination attempt at a campaign rally in Butler on Saturday. Photograph: Doug Mills/The New York Times
Secret Service agents flank former president Donald Trump as he walks to the stage shortly before the assassination attempt at a campaign rally in Butler on Saturday. Photograph: Doug Mills/The New York Times

The gunman who attempted to shoot Donald Trump at a rally in Pennsylvania on Saturday carried out internet searches before the attack for images of both Mr Trump and US president Joe Biden, as well as the dates of the current Republican national convention and next month’s Democratic national convention.

Top FBI and Secret Service officials told members of Congress on Wednesday that the initial investigation into the shooting had thrown up new information about the would-be assassin’s interests, but had brought agents no closer to finding a motive.

The suspect, named as Thomas Crooks (20), was a registered Republican but had no known political ideology and had searched digitally for details of many public figures.

According to the New York Times, they included Christopher Wray, the FBI director; Merrick Garland, the US attorney general; and top congressional party leaders such as Mike Johnson, the Republican leader of the House, and Hakeem Jeffries, the Democratic minority leader.

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Officials stressed to lawmakers that the significance of the searches found on the gunman’s phones and other digital devices was not clear.

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The Secret Service is coming under mounting pressure over security arrangements at the rally site in Butler, Pennsylvania. In the course of the briefings with Congress, law enforcement officers disclosed that the gunman had been sighted and noted as suspicious about an hour before the shooting, but he had then disappeared.

About 19 minutes before shots rang out, the man was spotted again, according to the Republican senator from Utah, Mike Lee. Local police chief Tom Knights said an officer from Butler Township had climbed up the side of the building from which the gunman struck, located about 150m from the stage where Mr Trump was speaking.

A CNN report said that in a statement Mr Knights disclosed that the officer had seen the gunman, who pointed his rifle at him.

“The officer was in a defenceless position and there was no way he could engage the actor while holding on to the roof edge. The officer let go and fell to the ground,” Mr Knights said.

The new details have left some lawmakers angered, both at the apparent lack of police intervention despite sightings of the gunman, and at why Mr Trump was allowed to take to the stage and address the crowd for several minutes before he was shot at. Kimberly Cheatle, director of the embattled Secret Service, is likely to have to face such questions on Monday when she comes before the House oversight committee.

Two phones belonging to the gunman were found – one at the rally site, on the roof of the warehouse beside his body after he was killed by Secret Service snipers, and the other during a search of his house in Bethel Park, Pennsylvania. Lawmakers were told that among his online searches, the gunman had been looking for information on major depression disorder, prompting a new line of inquiry that he might have been struggling with mental health issues. – Guardian