tom hansen has the latest. >> a senior law-enforcement official says investigators are exploring why some individuals had weapons and the ties that can function as plastic handcuffs. it continues to pursue charges in connection with wednesday's assault. that includes adam johnson of florida allegedly seen carrying that during the rampage. this man wearing horns, a bearskin headdress was also arrested. the article of impeachment incitement of insurrection alleges president trumps conduct gravely endanger the security of the united states. he would be the first president to be impeached twice. >> on saturday heavily armed term supporters gathered for a stop the steel protests. while anti-trump demonstrators rallied in front of the tower in new york's times square. tom hansen, cbs news. >> federal officials also charged the lawmaker who recorded himself storming the capital. derek evans stepped down from his post yesterday. a search is on for a suspect who shot three people and killed one of them. it happened just before 9:00 p.m.. they say that an argument led to the shooting criticall