India, Feb. 16 -- One of world's most notorious and oldest serial killer mysteries might have been solved almost 140 years later. The true identity of the 19th century serial killer "Jack the Ripper" has been revealed, claimed a English historian.

Author Russell Edwards has revealed that he tested the DNA found on a shawl recovered from the scene of one of the killer's murders. The test results have now revealed that the vicious murdered who terrorised Victorian London's East End in the late 1800s was a 23-year-old Polish immigrant named Aaron Kosminski.

"When we matched the DNA from the blood on the shawl with a direct female descendant of the victim, it was the singular most amazing moment of my life at the time. We tested the semen l...