Vice President Chester A. Arthur became President when Garfield died. Guiteau was tried for murder, and many thought he would be found not guilty because he was insane. He was actually found guilty and hanged for the murder, reading a poem before he walked up the gallows. It is now believed Garfield was in fact killed because of his doctors, who stuck their fingers inside his wounds while treating him and causing a bad infection. Alexander Graham Bell, inventor of the telephone, tried to locate the bullet with a primitive metal detector, but failed because the bed was lined with steel wire (which he did not know). While Garfield was still alive, news of his condition was broadcasted across the country by telegraph, which was something new.