As the first anniversary of Sri Lanka's crushing of Tamil Tiger rebels looms, the ridding of the former battle zones of land mines has neared its end, a top official said Sunday. 'The de-mining is 90 percent completed,' Chandra Fernando, the presidential advisor on northeast told reporters, adding that full completion should happen by mid-July. Fernando said of the 300,000 Tamil civilians displaced by the final war between the government troops and the rebels in early 2009, only around 60,000 remain to be resettled. 'Successful de-mining has led to rapid resettlement,' Fernando said. He said the resettlement which began on Oct. 22, 2009 has now been expanded to all areas in the north and east covering the former battle zone with the rebels. The three-decade-old separatist war cost nearly 100,000 lives as the rebels in the mid-1980s stepped up its armed campaign to carve out a separate homeland for the minority Tamil community in the north and east. The rebels were defeated by the government troops in May 2009 with almost all their senior leaders being killed. 