Arizona has marked the one-year anniversary of a deadly shooting in Tucson which killed six people. Thirteen people were injured in the attack, including Congresswoman Gabrielle Giffords, who was shot in the head.

Bells rang out across the city at 10:11 (17:11 GMT), starting a day of commemorative events.

An interfaith remembrance service at St Augustine Cathedral in the afternoon drew a crowd of hundreds. The service included performances by a Navajo flautist and a group of young dancers.

On Saturday, Mrs Giffords, who is still recovering, visited the scene of the shooting, a Safeway supermarket in north-west Tucson. She and her husband also hiked on a desert trail to the east of the city which has been named after her aide Gabe Zimmerman, who was killed in the attack.

She later made a surprise appearance at a candlelight vigil at the University of Arizona, to huge cheers from the crowds, and led them in reciting the Pledge of Allegiance.