The death toll of Odia labourers killed in the blast at a stone quarry in Kurnool district of Andhra Pradesh on August 3 has risen to six.All the six were migrant labourers from Rambha block of Ganjam district. According to sources, Ram Chandra Nahak (50) of Bandhatala Nuagaon died at King George Hospital in Visakhapatnam on Saturday night. Four persons from Bandha Tali Nuagaon, who were working as migrant labourers, died in the stone quarry blast in Kurnool. The other deceased from the village were Duryodhan Nahak (42), Manoranjan Nahak (22) and Pandav Lenka (40). Bhima Nahak (30) of Radhagovindpur and Rajendra Nahak (40) of Diandein village had also died because of this blast.