ting. AP Photo/Haven Daley

A 7-year-old, identified in a GoFundMe as Saylor Graham, and a 54-year-old teacher, Becky Drury, were critically injured in the gunfire.

Graham, who is in a wheelchair, was shot in the face, Kaylub Giamanco's brother, Kyle Giamanco, told NBC News.

The disabled student is in serious but stable condition, Krantz said. Drury was shot through her left arm and right hand, her mother-in-law, Yvonne Drury, posted on Facebook.

Drury suffered serious but non-life-threatening injuries, the chief said.