Kilinochchi, Sri Lanka, Mar 06: Sri Lanka`s Tamil Tigers expelled a renegade leader on Saturday in an internal crisis that could unravel the island`s two-year-old peace process. ``Karuna has been discharged from the liberation organisation and relieved of his duties,`` said Liberation Tigers Of Tamil Eelam political wing leader S P Thamilselvan, who added the rebels were still committed to a ceasefire signed with the government. Bureau Report