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, Breaking Celebrity News 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.