Police said underworld figure Makandure Mudhush died in a crossfire with the Police early this morning.
Madhush was arrested in Dubai last year and remained in CID custody until October 16.
He was handed over to the Colombo Crimes Division on October 16, four days before his death.
Madhush is known to have operated a close network with politicians and business figures across the political spectrum. Media reports said he was divulge his “secrets” during the trial.