Four killed in shooting at Oklahoma hospital building

Tulsa police department deputy chief Eric Dalgleish confirmed the number of dead and said the shooter is also dead, apparently from a self-inflicted gunshot wound

Two people hug outside at Memorial High School where people were evacuated from the scene of a shooting at the Natalie Medical Building (Tulsa World via AP)

A gunman carrying a rifle and a handgun has killed four people at a medical building on a hospital campus in Tulsa, Oklahoma.

The incident at the Natalie Medical Building on the St Francis Hospital campus is the latest in a series of deadly mass shootings across America in recent weeks.