The first doctor to attend to those injured in the Westminster attack was not on duty at the time, but rushed to the scene when he heard screaming.
Dr Jeeves Wijesuriya, a junior doctor from London who specialises in general practice, told BuzzFeed News he had been attending an interview nearby when the incident happened.
"I heard the screaming so ran to help and the police ran me in," he told us.
Wijesuriya treated two people, one of whom had been stabbed and another who had been shot. He said he believed one of the patients was the attacker.
"Hems [helicopter emergency services], paramedics and police were incredible as we tried to save both the officer and the assailant," he added. "We spent some time trying to resuscitate them both."
Wijesuriya told us that one patient died at the scene and another was pronounced dead at nearby St Mary's hospital in Paddington.
Dr Johann Malawana, a junior doctor and former chair of the British Medical Association's junior doctors committee, told us Wijesuriya was a "real hero".
Home safe. Humbled by incredible efforts of paramedics, Met police & Hems. Thoughts with those in hospitals tonight receiving & giving care.— Jeeves Wij (@AskJeevesWij) March 22, 2017
Source : BuzzFeed.