BJP's prime ministerial candidate Narendra Modi Thursday hit out at Bihar Chief Minister Nitish Kumar and called him an "arrogant" man whose government appeared to be "happy" after the Patna blasts.

"The Chhattigarh chief minister (Raman Singh) behaved as a sensitive person and constituted a high-level inquiry and personally met family members of Congress leaders killed in blasts by Maoists on May 25. But the Bihar chief minister behaved as an arrogant man and even failed to admit mistakes when a series of bombs went off in and around the BJP rally," the Gujarat chief minister said at an election rally in the tribal heartland of Bastar.