(TUCSON, Ariz.) -- Accused Tucson gunman Jared Loughner ran a red light and was stopped by police last Saturday, just hours before he allegedly opened fire in a grocery store parking lot where six people died and 14 were wounded.
When the officer determined that there were no outstanding warrants for Loughner, he was allowed to proceed to his destination with a warning to drive carefully.
Loughner was stopped at approximately 7:30 a.m. on Saturday by an Arizona Game and Fish Department officer, according to a statement released by the department.
"They do not routinely make traffic stops, except when public safety is at risk, such as running a red light," read the statement. "The officer took Mr. Loughner's driver's license and vehicle registration information and ran it through dispatch. The check came back with no wants nor any outstanding warrants on either the subject or his vehicle."
Later that morning, at 10:11 a.m., Loughner allegedly shot Rep. Gabrielle Giffords in the head and sprayed the crowd around her with rounds from a 9mm Glock handgun.
Also that morning, Loughner's father saw him take a black bag out of a car trunk. When the father approached him, his mumbling son took off running and the father chased him in his car, investigators said. Police haven't said what was in the bag, but they continue to search for it.
News of Loughner's behavior on the morning of the shooting spree comes as investigators tell ABC News they are reviewing any past contacts police may have had with the suspect to determine whether the massacre could have been prevented.
Immediately after the assault on Giffords and 19 others who attended her sidewalk meeting, Dupnik said that Loughner had never been on his department's radar.
He did say, however, "There have been law enforcement contacts with individuals where he made threats...to kill."
Public records indicate that Loughner was booked by police once in 2007 for possession of drug paraphernalia and was cited in 2008 for graffiti, according to public records and media reports.
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