Veteran Bollywood actor Manoj Kumar will undergo a surgery today at a suburban hospital in Mumbai.The 75-year-old actor, who was admitted to Kokilaben Hospital in suburban Andheri two days ago, will undergo gall bladder surgery coinciding with his birthday."He is undergoing gall bladder surgery at 8 am," hospital sources told PTI tonight.

The seasoned actor, renamed as "Mr Bharat Kumar" for having acted and directed movies based on the theme of patriotism, is known for his films Hariyali Aur Raasta, Who Kaun Thi, Himalaya Ki God Mein, Do Badan, Upkar, Patthar Ke Sanam, Neel Kamal, Purab Aur Paschim, Roti Kapda Aur Makaan, Kranti to name a few.