Patna, With over 20 lakh people bearing the brunt of floods in 14 districts of Bihar, three Indian Air Force helicopters continued to drop relief materials in the worst hit Supaul, Araria and Madhepura for the fifth successive day as the turbulent waters of the Kosi submerged fresh areas in the three districts. So far, 42 people have died in the flood in Bihar, sources said. Three IAF choppers airdropped relief materials in the flood-ravaged villages of Supaul, Araria and Madhepura districts where more than 12 lakh people were hit by the flood caused by the breach in the East Kosi afflux embankment in Nepal on August 18, chief minister Nitish Kumar told reporters. The problem has been compounded by the fact that the river, named the "Sorrow of Bihar', has changed its course due to the breach that widened to more than two km now, destroying standing crops and flattening houses coming on its way, he said. Evacuating the people stranded on roads, embankments and other elevated places between the two streams of the river posed a major challenge to the flood fighting machinery of the state government.