Kannada filmmaker KV Raju died of heart attack aged 67 due to prolonged illness, Karnataka Film Chamber of Commerce President DR Jairaj said on Friday. Raju began his career as an assistant director in 'Baadada Hoo' (1982). In 1984, he made his directorial debut in 'Olave Baduku'. He made his Bollywood debut with Amitabh Bachchan-Jaya Prada starrer 'Indrajeet' (1991).