arrested during a traffic stop. police say burkhart became enraged and had to be restrained. his mother, dorothy, an international fugitive, was wanted by german authorities on 37 counts of fraud. later that day, harry attended dorothy's initial extradition hearing and his tirade resumed. >> he entered the courtroom and made quite a disturbance. there was a lot of cursing in english, words i won't repeat here. he was detained momentarily by court security personnel. >> reporter: authorities suspect his mother's detention may have been the motivation for what began less than 12 hours later. first, more than 50 arson fires that terrified several los angeles communities over four days. >> it was full of smoke. we couldn't even breathe. >> reporter: the arson spree didn't stop until harry burkhart was arrested. appearing to smirk in the back seat of a patrol car early monday morning.