Trump rally shooter searched online about Michigan school shooter and explosives
![Trump rally shooter searched online about Michigan school shooter and explosives](https://media-cldnry.s-nbcnews.com/image/upload/t_fit_1500w/rockcms/2024-07/240714-donald-trump-vl-1042a-9e8080.jpg)
Federal investigators have uncovered thousands of links from the online phone history of the gunman who tried to assassinate former President Donald Trump, including searches involving a teenage mass shooter in Michigan, according to two law enforcement sources.