German killer nurse suspected of 84 more murders

FRANKFURT, Aug 28 (Reuters) - A German nurse jailed for murdering two patients is suspected of killing at least 84 other people, police said on Monday.

The man, identified only as Niels H. under reporting rules, has "confessed in many of those cases," a police statement said, but could not remember all the details of his actions. If confirmed, the death toll would be among the worst ever compiled by a German serial killer.

In past hearings, Niels H. admitted deliberately injecting patients at two clinics in northern Germany with deadly drugs and then trying to revive them in order to play the hero, German broadcaster NDR said.

He was convicted of two charges of attempted murder and two counts of murder by an Oldenburg court in 2015.

RELATED: A look at the German killer nurse in court

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A look at the German killer nurse in court
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A look at the German killer nurse in court
Former nurse Niels H. (L) masks his face with a folder next to his lawyer Ulrike Baumann on his arrival in the courtroom at the regional court in Oldenburg, December 9, 2014. Niels H. was sentenced in 2008 for three murders and imprisoned and he stands a new trial in Oldenburg as the prosecutor tries to find out if he committed more crimes, local media said. REUTERS/Fabian Bimmer (GERMANY - Tags: CRIME LAW)
Former nurse Niels H. (R) masks his face with a folder on his arrival in the courtroom at the regional court in Oldenburg, December 9, 2014. Niels H. was sentenced in 2008 for three murders and imprisoned and he stands a new trial in Oldenburg as the prosecutor tries to find out if he committed more crimes, local media said. REUTERS/Fabian Bimmer (GERMANY - Tags: CRIME LAW)
Former nurse Niels H. (L) masks his face with a folder next to his lawyer Ulrike Baumann on his arrival in the courtroom at the regional court in Oldenburg, December 9, 2014. Niels H. was sentenced in 2008 for three murders and imprisoned and he stands a new trial in Oldenburg as the prosecutor tries to find out if he committed more crimes, local media said. REUTERS/Fabian Bimmer (GERMANY - Tags: CRIME LAW)
Former nurse Niels H. (L) masks his face with a folder with the help of his lawyer Ulrike Baumann on his arrival in the courtroom at the regional court in Oldenburg, December 9, 2014. Niels H. was sentenced in 2008 for three murders and imprisoned and he stands a new trial in Oldenburg as the prosecutor tries to find out if he committed more crimes, local media said. REUTERS/Fabian Bimmer (GERMANY - Tags: CRIME LAW)
Former nurse Niels H. masks his face with a folder on his arrival in the courtroom at the regional court in Oldenburg, December 9, 2014. Niels H. was sentenced in 2008 for three murders and imprisoned and he stands a new trial in Oldenburg as the prosecutor tries to find out if he committed more crimes, local media said. REUTERS/Fabian Bimmer (GERMANY - Tags: CRIME LAW)
Former nurse Niels H. masks his face with a folder on his arrival in the courtroom at the regional court in Oldenburg, December 9, 2014. Niels H. was sentenced in 2008 for three murders and imprisoned and he stands a new trial in Oldenburg as the prosecutor tries to find out if he committed more crimes, local media said. REUTERS/Fabian Bimmer (GERMANY - Tags: CRIME LAW)
OLDENBURG, GERMANY - NOVEMBER 27: Niels H. arrives for his trial at court on November 27, 2014 in Oldenburg, Germany. Originally charged with the murder of several patients at a clinic in Delmenhorst, recent doctors' reports indicate that Niels H., who worked at several hospitals, may have murdered over 200 people over a time-period spanning a decade at at least two clinics and during a time when he worked as an emergency rescue worker. (Photo by Markus Hibbeler/Getty Images)
OLDENBURG, GERMANY - NOVEMBER 27: Niels H. arrives for his trial at court on November 27, 2014 in Oldenburg, Germany. Originally charged with the murder of several patients at a clinic in Delmenhorst, recent doctors' reports indicate that Niels H., who worked at several hospitals, may have murdered over 200 people over a time-period spanning a decade at at least two clinics and during a time when he worked as an emergency rescue worker. (Photo by Markus Hibbeler/Getty Images)
Former nurse Niels H. masks his face with a folder on his arrival in the courtroom at the regional court in Oldenburg, December 9, 2014. Niels H. was sentenced in 2008 for three murders and imprisoned and he stands a new trial in Oldenburg as the prosecutor tries to find out if he committed more crimes, local media said. REUTERS/Fabian Bimmer (GERMANY - Tags: CRIME LAW)
German former male nurse Niels H (R) is in the focus of photographers and cameramen as he waits for his trial on February 19, 2015 at court in Oldenburg, northwestern Germany. The 38-year-old man who has said he killed more than 30 hospital patients out of boredom apologised to the victims' relatives. AFP PHOTO / DPA / CARMEN JASPERSEN +++ GERMANY OUT (Photo credit should read CARMEN JASPERSEN/AFP/Getty Images)
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Police said on Monday that they had investigated additional deaths at hospitals in the northern German cities of Oldenburg and Delmenhorst after exhuming the remains of 134 people with links to Niels H.

They said he had used five different drugs on the patients, including alkaloid ajmaline and arrhythmia drug sotalol, between 1999 and 2005.

Toxicological reports for 41 people have not been completed, which means the number of victims could rise, police said.

Prosecutors have also charged six people who worked with Niels H. at the Delmenhorst hospital on suspicion of failing to stop the killing even though they were aware of it.

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Ten years ago, a German nurse was convicted of killing 28 elderly patients. He said he gave them lethal injections because he felt sorry for them. He was sentenced to life in prison.

In Britain, Dr. Harold Shipman was believed to have killed as many as 250 people, most of them elderly and middle-aged women who were his patients. Known as Dr. Death, Shipman was sentenced to 15 life terms in 2000; he died prison in 2004, apparently a suicide. (Reporting by Maria Sheahan; Editing by Larry King)

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