TUCSON, Ariz. (CBS/KPHO/AP) A man walking his dog has found a black bag holding ammunition that authorities believe was discarded by Jared Loughner, the gunman accused of trying to assassinate an Arizona congresswoman.
Chief Rick Kastigar with the Pima County Sheriff's Office told The Associated Press that an 18-year-old found the bag Thursday morning in a neighborhood near where the suspect lives. He went to get another man, who looked inside and saw ammunition.
Authorities have said the suspect, Jared Loughner, and his father got into a confrontation over the bag at their home in the hours before the shooting.
According to authorities, Loughner grabbed the black bag from the trunk of a family car before fleeing into the desert on foot with his suspicious father giving chase. Eventually, he took a cab to the grocery store where he opened fire on Rep. Gabrielle Giffords and a line of people waiting to speak to her.
Loughner is accused of Saturday's shooting rampage in Tucson that left 6 dead and 13 wounded.