Around the World: United States

Killing at Virginia Tech

A graduate student from China has been charged with murder in the fatal stabbing of a female student on the campus of Virginia Tech, the first killing at the American university since a deadly mass shooting in 2007.

An electronic alert system revamped after the massacre warned students to stay in place while police investigated the incident around 7:45 pm on Wednesday - about half an hour after the suspect was taken into custody. Students were cleared to resume normal activity about an hour later.