Gunman kills four in Oklahoma medical centre, police say

Emergency personnel work at the scene of a shooting at the Saint Francis hospital campus, in Tulsa, Oklahoma, June 1, 2022. [Reuters]

A man armed with a rifle and a handgun killed four people inside a medical building in Tulsa, Oklahoma on Wednesday before fatally shooting himself, police said, in the latest of a series of mass shootings to rattle the United States.

Police arrived at the St. Francis Hospital campus three minutes after receiving a call about the shooting on Wednesday afternoon and followed the sound of gunfire up to the Natalie Building's second floor, Tulsa deputy police chief Eric Dalgleish told reporters.