Actor Sai Gundewar, who worked in films like 'PK' and 'Rock On!!', passed away aged 42 due to brain cancer on Sunday, Maharashtra Home Minister Anil Deshmukh tweeted. He died in Los Angeles, US where he was undergoing cancer treatment. Condoling his death, Anil wrote, "With his demise, the Indian film industry has lost a talented actor. A heartfelt tribute!"