for more, let's get to nbc's dan scheneman. >> reporter: luigi mangione, denied bail by a pennsylvania judge and fighting extradition, charges in new york with murder in connection with last week's shooting death of unitedhealthcare ceo brian thompson in manhattan. >> if you believe in america and that presumption of innocence you cannot rush to judgment. >> reporter: he was spotted in altoona, pennsylvania. a worker noticed he was wearing a mask, thought he looked suspicious and called police. the officers asked him to pull down the mask. he presented a fake i.d. when asked if he had been to new york recently, police say he started to shake. taken into custody without incident, initially arrested on a forgery charge, police then searched the backpack. >> a firearm was located and a suppresser located. there were also other items of evidentiary value that were located that will assist in this investigation. >> reporter: that included a hand-written note that said these parasite also it coming. >> you see a lot of anti-corporatist sentiment. >> reporter: mangione was born and raised in