Grezgorz Stainslaw W., a native from Poland, was initially accused of six murders, but the court didn’t have enough evidence to convict him on more than the three, according to The Local De.
Grezgorz, 38, is accused of injecting patients with a deadly dose of insulin. He was found guilty of attempted murder in two cases, and dangerous bodily injuring, as well as stealing from his victims, according to BBC.
Doctors became suspicious when they found a fresh needle on a patient who had just died. One elderly patient threatened to jump out the window when Grezgorz came near him.
Grezgorz refused to testify, but apologized to the victim’s families,”what I have done is very brutal and remains brutal,” he said in the court.
Grezgorz visited the homes of at least 69 patients in many German cities from Bavaria to Hanover between April 2017, and February 2018.
Prosecutors believe he hated his job and committed one murder to avoid getting fired.
The defendant was also previously convicted of fraud in Poland and was in prison between 2008 and 2014.
According to The Local De, the case was a reminder of Niels Hogel, a german nurse who was sentenced to life in prison last year for killing 85 patients.