Here is the latest information from Tucson, Arizona where twenty people were shot Saturday at a Safeway, killing six and wounding fourteen, including U.S. Rep. Gabrielle Giffords. Among the dead are a Federal Judge and a nine-year old girl.

Six people were killed and 14 others wounded, including U.S. Rep. Gabrielle Giffords, when a gunman opened fire in front of a Safeway supermarket in Tucson, Arizona, authorities said. The congresswoman had been hosting a meeting with constituents Saturday morning when the attack began.

Here are the latest developments as confirmed by CNN:

Astronaut Mark Kelly, Giffords' husband, released his first public statement since the weekend shooting rampage outside an Arizona supermarket that left his wife critically injured. He thanked supporters, expressed condolences to families of other victims and suggested that well-wishers make donations to Tucson's Community Food Bank and the American Red Cross. "Many of you have offered help. There is little that we can do but pray for those who are struggling," he said.

Suspect Jared Lee Loughner is scheduled to make an initial appearance before a federal magistrate in Phoenix, Arizona, Monday at 2 p.m. (4 p.m. ET), prosecutors said.

Suspect Jared Lee Loughner tried to buy ammunition at a Wal-Mart a few weeks back but was turned down because of his behavior, a law enforcement source said. He then successfully bought it at a different Wal-Mart, according to the source.

A woman credited with wrestling an ammunition magazine from the suspect says she didn't have time to think about what she was doing. "(The suspect) pulled the magazine out of his pants pocket and it dropped onto the sidewalk. And before he could reach it, I got it," Patricia Maisch said.

Suspect Jared Lee Loughner was rejected by the Army for military service after failing a drug test in 2008, according to an administration official.

The U.S. Supreme Court says it will observe the moment of silence that President Barack Obama called for at 11 a.m. ET Monday. To accommodate this, the court will convene 10 minutes early, at 9:50 a.m. ET, so that the day's first argument before the court will be completed by 11 a.m.

House Democrats and Republicans participated in a rare bipartisan conference call Sunday to discuss the condition of Rep. Gabrielle Giffords as well as security concerns for members of Congress.

According to a federal agent's affidavit, U.S. District Judge John Roll, who was killed in the shooting, came to the Tucson from Phoenix to discuss the volume of federal cases in Arizona with Giffords.

The FBI has confirmed that investigators have found, questioned and cleared a man they had sought as a "person of interest" after the killings. The man was cab driver who dropped suspect Jared Lee Loughner off at the Safeway where Giffords' "Congress on Your Corner" event was being held, a law enforcement official previously said.

Veteran federal public defender Judy Clarke, who has experience in several high-profile cases including those of "Unabomber" Ted Kaczynski and convicted terrorist Zacarias Moussaoui, was appointed to defend suspect Jared Lee Loughner, a federal judicial source said.

Calls to 911 following Saturday's shooting - released Sunday by the Pima County Sheriff's Office - paint a patchy picture of the scene.

Investigators found papers bearing the words "my assassination" and "Giffords" in a safe in the home of shooting suspect Jared Lee Loughner, according to a complaint filed against him in federal court.

U.S. Rep. Gabrielle Giffords is the only person wounded in Saturday's shooting who is still in critical condition, doctors at University Medical Center in Tucson said. Three are in serious condition, six are in fair condition, and one has been released, they said.

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