"I have raised my concern three times by creating different sand art. Today for the fourth time I have sculpted another art to show my concern about the tragedy," Pattnaik said.
Pattnaik has created sand sculpture of the missing Malayasian flight within a big question mark with message "Where is MH370" at Puri beach of Odisha.
To create this ten feet high sand sculpture, Pattnaik used about seven tons of sand.
"I earnestly request you to investigate the disappearance of MH-370 by a UNO supervised body to unravel the mystery. Let truth alone triumph," he said in the letter.