Administrators warned 3 times on the day boy shot teacher at a Virginia elementary school

Diane Toscano, an attorney for Abigail Zwerner, said during a news conference that she has notified the school board in Newport News that the 25-year-old teacher at Richneck Elementary School plans to sue the school district over the Jan. 6 shooting, which left Zwerner with serious injuries. (Jan. 25)