Twenty-five-year-old Francis Brennan fled the UK ahead of a trial where he was likely to be found guilty of stabbing someone during a Swedish House Mafia concert in Milton Keynes in 2012.
UK police caught on to the fact he was hiding out in Spain’s Costa del Sol but a group of men posing as Spanish Civil Guard officers beat them to it.
"(They) handcuffed him and took him away. At that point friends and family believed that he had been arrested," UK Detective Sergeant Richie Carr said in a statement.
Two and half months after his disappearance, the Liverpool native has been found dead on a beach on the eastern Spanish city of Alicante.
His body, wrapped in an industrial-sized bin bag and duct tape, was washed up onto the city's Orihuela beach, the Liverpoo Echo reported.
Spanish authorities have also said that Brennan's hands were tied and that he had sustained a serious wound to the head.
His body emerged from the sea after a concrete block weighing the bag down was washed away by the waves.
A "criminal fraternity" which Brennan had links to is believed to be behind both his kidnapping and murder.