Killer nurse suspected of causing 84 deaths and 'likely many times' more in Germany

A nurse who was convicted of killing patients in Germany with overdoses of heart medication is now believed to have killed at least 84 people - and the true scale of the killings could be larger, investigators said.

Niels Hoegel was convicted in 2015 of two murders and two attempted murders at a clinic in the north western town of Delmenhorst. But prosecutors have long said they believe he killed more people, last year putting the figure at 43 at least.