-- Early Sunday morning, the sheriff's office released a surveillance camera photo of a male between 40 and 50 years old who is "possibly associated with the suspect." The dark-haired man was last seen wearing blue jeans and a dark blue jacket, and was seen at the location where the shooting occurred.
-- Dr. Steven Rayle was about 10 feet away from Giffords when the gunman shot the congresswoman. "He continued to fire, sort of rapidly, really at point-blank range," he said, adding that the man was shooting indiscriminately.
-- The suspect was tackled to the ground by two men when he was trying to reload, another witness said.
-- The gun, which another bystander had wrestled from the gunman, was empty and cocked open. Federal and state law enforcement sources described it as a 9mm Glock outfitted with a 30-round magazine.
-- The shooter had another magazine at the ready, according to Joe Zamudio who said he was one of the bystanders who pinned the gunman to the ground until police showed up.
-- The suspect in the shooting is Jared Lee Loughner, a 22-year-old former community college student, according to an Arizona law enforcement source and a U.S. law enforcement source.
-- He railed against government "mind control" and illiteracy in online missives and had "kind of a troubled past," said Pima County Sheriff Clarence Dupnik.
-- He took classes at the college from 2005 until October 2010, but withdrew after five contacts with police "for classroom and library disruptions" at two campuses between February and September, the school said.
-- Loughner was suspended after authorities found a YouTube video in which he called the school "illegal according to the U.S. Constitution, and makes other claims," a college statement said. He quit during an October 4 meeting with his parents and school administrators, and a follow-up letter warned that to return, he had to present a doctor's note stating that "his presence at the College does not present a danger to himself or others."
-- Online, Loughner complained about the "second Constitution," a term legal scholars sometimes use to describe the post-Civil War amendments that ended slavery, extended the right to vote and required equal protection under the law. Its meaning to Loughner could not be clearly discerned.
-- Following the shootings, all legislation on the House schedule for the coming week was postponed, House Majority Leader Eric Cantor said. The decision was made by leaders of both parties and means the House will not vote next week on the repeal of health care reform.