Authorities thwarted an alleged school shooting in Washington state, arresting a 13-year-old boy. Trevor Ault reports as police say they found an arsenal of weapons in his home. https://abcnews.link/zLCp8dH | ABC World News Tonight with David Muir

More than 24 hours after a single bullet killed Charlie Kirk before a crowd of thousands, the FBI released photos of a person of interest and said they were able to track his path from the moment he arrived on campus. Matt Gutman reports. https://abcnews.link/hvS51uG | ABC World News Tonight with David Muir

Members of both parties join in a moment of silence for activist Charlie Kirk on Capitol Hill. In a statement the Secret Service reassures the American public that the president has the highest level of protection. Mary Bruce reports. https://abcnews.link/eVs73WM?utm_source=facebook&utm_medium=social&utm_campaign=dhfacebook&utm_content=app.dashsocial.com/abcworldnewstonight/library/media/581085304 | ABC World News Tonight with David Muir