Six dead, at least five injured in Virginia Walmart mass shooting | USA TODAY

The first 911 call came in at 10:12 p.m. Tuesday, and the first officers arrived two minutes later, Chesapeake Police Chief Mark Solesky said Wednesday. Police spokesman Leo Kosinski said several people were wounded or hiding in the store and that rescue and tactical teams swept through providing "life-saving measures."

The assailant was found dead of a self-inflicted gunshot wound and a handgun was recovered at the scene, Solesky said. The shooter's home was being searched but his identity was not released pending notification of family, the chief said.