美国联邦调查局已经能够对实施枪击事件的嫌疑人的心态进行广泛的分析7月13日暗杀企图官员们周三表示，前总统唐纳德·特朗普在宾夕法尼亚州巴特勒的集会上，但迄今为止无法确定明确的动机。

　　在周三下午的一次媒体电话中，美国联邦调查局表示，作为对枪击事件调查的一部分，它已经进行了近1000次采访，发出了大量搜查令，发出了数十张传票，并分析了数百小时的视频片段。

　　官员们表示，作为调查的一部分，他们发现托马斯·马修·克鲁克斯(Thomas Matthew Crooks)进行了“持续、详细的努力”，以计划对某种重大事件发动袭击，但当特朗普的集会宣布时，他变得“高度关注”，将其作为“机会的目标”。

　　除了之前透露的克鲁克斯在7月6日进行的在线搜索，即“[李·哈维]奥斯瓦尔德离[约翰·肯尼迪]有多远”，官员们表示，他还搜索了“特朗普将在巴特勒农场秀的哪里发表演讲?”以及“巴特勒农场秀讲台”和“巴特勒农场秀照片”

　　据报道，在袭击发生前的30天里，克鲁克斯进行了“60多次与前总统特朗普和拜登总统有关的搜索”，美国联邦调查局表示。

　　通过审查克鲁克斯自2019年以来的在线活动，调查人员表示，他们还发现他进行了多次与爆炸装置有关的搜索，包括“如何用化肥制造炸弹”和“远程雷管如何工作”。

　　美国联邦调查局在周三的简报中发布了一张图片，显示了一个简易爆炸装置，据说是在克鲁克斯的车内发现的。美国联邦调查局表示，在对该设备进行分析后，它确定这些组件都是合法购买的，“在网上很容易买到”

　　官员们还提供了枪击前行动时间表的更新。官员们表示，根据从当地一家企业获得的视频，克鲁克斯在下午6点05分首次爬上AGR综合大楼的屋顶，并穿越了一系列屋顶，然后据称在下午6点11分开了八枪，这意味着他在屋顶上呆了总共六分钟，然后据称开始开枪，然后被特勤局的反制人员打死。

　　Motive still a mystery in Trump assassination attempt

　　The FBI has been able to gain extensive analysis on the mindset of the suspected shooter who carried out theJuly 13 assassination attempton former President Donald Trump at his rally in Butler, Pennsylvania, officials said Wednesday, but it has so far been unable to establish a clear motive.

　　In a media call Wednesday afternoon, the FBI said it has conducted nearly 1,000 interviews, served numerous search warrants, issued dozens of subpoenas and analyzed hundreds of hours of video footage as part of its investigation into the shooting.

　　As part of their investigation, officials said, they've found that Thomas Matthew Crooks engaged in a "sustained, detailed effort" to plan an attack on some kind of major event, but when the Trump rally was announced, he became "hyperfocused" on it as a "target of opportunity."

　　In addition to a previously revealed online search conducted by Crooks on July 6 that stated, "How far was [Lee Harvey] Oswald from [John F.] Kennedy," officials said he also searched "Where will Trump speak from at Butler Farm Show?" as well as "Butler Farm Show podium" and "Butler Farm Show photos."

　　In the 30 days prior to the attack, Crooks reportedly conducted "more than 60 searches related to former President Trump and President Biden," the FBI said.

　　Through a review of Crooks' online activity dating back to 2019, investigators said they've also found he had conducted multiple searches related to explosive devices including, "How to make a bomb from fertilizer" and "How remote detonators work."

　　The FBI released a picture in tandem with its briefing Wednesday showing an improvised explosive device it has said was found inside Crooks' vehicle. The FBI said that after an analysis of the device, it determined the components were all purchased legally and "readily available online."

　　Officials also provided an update to the timeline of the actions leading up to the moments of the shooting. According to video obtained from a local business, Crooks first climbed onto the roof of the AGR complex at 6:05 p.m. and traversed a series of rooftops before allegedly firing eight rounds at 6:11 p.m., officials said, meaning he was on the rooftop for a total of six minutes before he allegedly began firing and then was killed by a Secret Service countersniper.