The islanders defeated much-fancied Bangladesh by 79 runs on Saturday to win the 50-over tournament, which also involved Zimbabwe.
Bangladesh were bowled out for 142 while chasing 222 at the Sher-e-Bangla National Stadium, where they had posted 320-7 in the league phase against the same opponents.
"We wanted to know from Gamini why the wicket behaved like that," said Bangladesh Cricket Board media committee chairman Jalal Yunus.
"It was a wicket of 320 runs. All of sudden it turned out to be a slow wicket. This is a routine explanation, which we can always seek from an employee," he said.
Officials said the slow wicket was contrary to the requirements of home team with experts identifying it as one of the main reasons behind the hosts' debacle in the final.
Former umpire-turned-curator Gamini has been in charge of the Sher-e-Bangla National Stadium since 2011.
He was subjected to some harsh criticism for producing slow wickets during the Bangladesh Premier League Twenty20 tournament in November.
The ground also came under scrutiny from the International Cricket Council, which rated its outfield as "poor" after Bangladesh beat Australia in a Test match in August-September.
First Published: January 30, 2018, 5:46 PM IST