India, July 21 -- A ctors Mammootty, 74, and Dhanush, 42, celebrated their wins at the 72nd National Film Awards with director Rajkumar Periasamy and editor R Kalaivanan on the sets of their upcoming Tamil film OM. Mammootty, who won Best Actor for the Malayalam film Bramayugam, shared pictures of the cake-cutting celebration on X, writing, "A small celebration of our National Award wins. Grateful for all the love and wishes." Dhanush received a Special Mention for the Tamil film Captain Miller, while his directorial Raayan won Best Tamil Film. Periasamy and Kalaivanan were honoured for direction and editing, respectively, for the Tamil film Amaran. The latest win takes Mammootty's National Award tally to four, while Dhanush now has six honours.HTC...