Description & Facts: Gabrielle Gifford of Arizona was shot in the head (CNN) -- US Rep. Gabrielle Giffords was critically wounded Saturday in a shooting at a Tucson, Arizona, grocery store in which at least 11 other people were injured, officials said. Darci Slaten, a spokeswoman for University Medical Center in Tucson, said Giffords was undergoing surgery Saturday afternoon for a gunshot wound to the head. A federal judge from Arizona was among the 11 others shot in the incident, a law enforcement source told CNN. pictures clip video The shooting happened shortly after 10 am MST, Pima County Sheriff's Department spokesman Jason Ogan said. AZ congresswoman among 12 shot in Tuscon Several shot at Tuscon grocery store جابرييل جيفوردز قتل مقتل اغتيال Giffords, 40, was holding a constituent meeting at the Safeway grocery store when the shooting occurred, according to a schedule posted on her website. An FBI spokesman said the agency was sending agents to the scene, and two senior Obama administration officials said the White House is monitoring the situation. They said they believed that a congressional staffer may have been killed. US Representative Gabrielle Giffords of Arizona was shot in the head while meeting constituents at a grocery store in Tucson, media reported on Saturday. Giffords, a 40-year-old Democrat in her third term in Congress, was shot point blank by an unidentified gunman who fired indiscriminately into the crowd, National Public Radio and other US media said. A hospital