The United States is in shock after a mass shooting left 28 people in Connecticut dead, including 20 children. More details are starting to emerge about the carnage, which also claimed the lives of seven adults and the suspected gunman. Here is what is known so far about the timeline of events which began on a seemingly ordinary Friday morning, only weeks away from the Christmas holidays. The suspect, widely reported to be 20-year-old Adam Lanza, shot and killed his mother Nancy Lanza at their home in Yogananda Street in Newtown, an affluent town of 27,000 people about 60 miles northeast of New York City. It is still not clear why Lanza killed his mother, who the Associated Press news agency reported had divorced Lanza's father Peter four years ago. A parent told AP that Nancy Lanza was a substitute teacher at Sandy Hook Elementary School, but this is not confirmed.
