Megastar Amitabh Bachchan thanked all those who congratulated him for his best actor National Award win, saying he is "most grateful".
Bachchan, 73, was named best actor for his role in Shoojit Sircar's Piku at the 63rd National Film Awards announced in the capital on Monday.
"To them that congratulate me for the National Award - most grateful... thank you is never enough expression," Bachchan wrote on Twitter.
He previously won the honour for Agneepath, Black and Paa.
Bachchan celebrated the win with wife Jaya Bachchan and the crew members of an advertisement he was shooting with the latter.
"Working with the wife today for an ad, promotion and some moments from there, they celebrate my National Award on set and then as I leave the studio they burst a few crackers .. sweet," he wrote on his blog alongside some pictures from the set.
Bachchan also congratulated other winners including Gujarat, which was named the most film friendly state at the National Film Awards for its effort to ease shooting films.
"Congratulations National Award winners and to the State of Gujarat that wins 'Most Film Friendly State'." The actor is currently the brand ambassador of Gujarat Tourism.
