Loughner's Parents "Surprised" by Son's Rampage

The parents of the suspect in the Tucson, Ariz., shooting rampage told federal investigators that they knew their son was becoming increasingly troubled but were not aware how much he had drifted and were "completely surprised" that he actually committed a violent act, a law enforcement source told CBS News investigative producer Pat Milton Tuesday.

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Randy and Amy Loughner, the parents of suspected shooter Jared Loughner, 22, have been interviewed extensively by the FBI, Milton reports, as part of the investigation into Saturday's shooting in which six people, including a federal judge, died and 14 others, including U.S. Rep. Gabrielle Giffords, were wounded.

Giffords' doctors said the congresswoman is breathing under her own power and generally "holding her own" in her third day of recovery from a near-fatal gunshot wound. Jared Loughner is being held without bail on federal charges, including one that he attempted to assassinate Giffords.

The source told Milton that one of the critical questions investigators initially tried to determine is whether Loughner was spurred on by hate groups or pushed or directed by some other individuals or groups. So far there has been no information that is the case.

The source also told Milton that investigators are looking into whether Loughner may have conducted surveillance on Giffords' district office and campaign rallies.

Loughner's parents are devastated, according to neighbor Wayne Smith, 70.

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"And they feel guilty for what happened," he told KPHO-TV Monday evening. "They want to know, where did they fail? I told them they didn't fail. They taught him everything about right and wrong. We all know you can teach someone everything and have no control how it works out."

Amy Loughner has been in bed, crying nonstop since Saturday, Smith said. In an interview with the Wall Street Journal, Smith said the pair - who haven't been seen the incident on Saturday - were "hurting real bad … They are devastated."

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According to the Journal, it was Smith himself who delivered the news to Randy and Amy Loughner that their son was under arrest and suspected of a mass shooting on Saturday. He told the Journal he informed the couple what was going on when they returned to their home after shopping to find it swarmed by police.

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Roxanne Osler, of Tucson, whose son had been a friend of Jared Loughner's, said he had a bad relationship with his parents and had distanced himself from family.

"What Jared did was wrong. But people need to know about him," she told The Washington Post. "I wish people would have taken a better notice of him and gotten him help. ... He had nobody, and that's not a nice place to be."

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Loughner's parents have not spoken publicly, though Smith said the father plans to release a statement.