EXCLUSIVE: How Jack the Ripper's Identity Could Finally be Revealed — 136 Years On From Prostitute Rampage

The grisly case of Jack the Ripper could finally be closed by British cops more than 136 years after his murderous killing spree in London.

A descendant of one of the Ripper’s victims has demanded an inquest into one of history’s most notorious serial killers after DNA evidence suggested the murderer was a Polish barber, RadarOnline.com can reveal.

The true identity of Jack the Ripper, whose grisly murders terrorized the murky slums of Whitechapel in east London in 1888, has been a mystery ever since.

He is believed to have killed at least five female prostitutes.

There have been dozens of suspects, from royalty and prime ministers down to bootmakers.

After extracting DNA from a shawl recovered from the scene of one of the killings, Jack the Ripper sleuth Russell Edwards claimed in 2014 that the murderer was Aaron Kosminski, an emigre from Poland, who worked as a barber.

The story goes that the shawl came from the murder scene of the Ripper’s fourth victim, Catherine Eddowes, on September 30, 1888.

At Edwards’ request, Doctor Jari Louhelainen, a senior lecturer at the UK's Liverpool John Moores University, isolated seven small segments of DNA from blood stains on the shawl.

They were matched with the DNA of Karen Miller, a direct descendant of Eddowes, confirming her blood was on the shawl.

DNA from semen stains on the garment was matched with a descendant of Kosminski.

Edwards has demanded an inquest into the unsolved killing, saying the DNA evidence warrants it. Miller backed the call in an interview published on Monday.

"The name Jack the Ripper has become sensationalized. It has gone down in history as this famous character," she said.

"People have forgotten about the victims, who did not have justice at the time. Now we need this inquest to legally name the killer," Edwards added.

Some have cast doubt on Edwards’ findings, however.

The research has not been published in a peer-reviewed scientific journal, meaning the claims cannot be independently verified or the methodology scrutinized.

Under the law, it is up to the UK government's Attorney General to approve a further inquest. Two years ago, then the Attorney General, Michael Ellis, refused the request, saying there was not sufficient new evidence.

Miller said on Monday the time was right to reopen the case.

"It would mean a lot to me, to my family, to a lot of people to finally have this crime solved," she added.

Kosminski was born in Klodawa in central Poland on September 11, 1865.

His family fled the imperial Russian anti-Jewish pogroms and emigrated to east London in the early 1880s. He lived close to the murder scenes.

Some reports say he was taken in by the police to be identified by a witness who had seen him with one of the victims.

Although a positive identification was made, the witness refused to give incriminating evidence, meaning the police had little option but to release Kosminski.

He entered a workhouse in 1889, where he was described on admission as "destitute." He was discharged later that year but soon ended up in a mental asylum.

Kosminski died from gangrene in an asylum on March 24, 1919, and was buried three days later at East Ham Cemetery in east London.