Has anyone in little league baseball hit two grand slams in same inning?

In MLB, that was Jim Gentile of the Baltimore Orioles on May 9, 1961 against the Minnesota Twins at Metropolitan Stadium in Bloomington.

He hit a grand slam in the 1st inning off of Pedro Ramos and a grand slam in the 2nd inning off of Paul Giel. He also had a sacrifice fly in the 8th inning and ended the game, won by the Orioles 13-5, with 9 RBIs.