DNA collected from beneath the fingernails of a woman violently killed in her Maryland home in 2001 led cold-case investigators to a suspect her daughters ex-boyfriend according to a newly released arrest warrant obtained by HuffPost.

Eugene Teodor Gligor, 44, was arrested on June 18 in Washington, D.C., and charged with first-degree murder in the 2001 killing of Leslie Preer, 49. Montgomery County Police Department detectives said in the court documents that they had collected Gligors DNA on June 24 from a water bottle they saw him use and discard at Dulles International Airport on June 9. Authorities said his DNA was a match to crime scene evidence that could only belong to Preers killer.