In 1989, Manik played for the Bangladesh Green Team (B team) at the President's Gold Cup. His greatest moment with the senior national team came during the 1989 South Asian Games, when Manik scored the opening goal of the match against India and helped his country earn a place in the finals, however, the game ended in huge controversy, when Bangladesh captain Elias Hossain was suspended from playing international games after getting into a fight with the referee. Manik last played for the national team on 31 March 1997, when Bangladesh lost 0–1 to Malaysia at the Prince Abdullah Al Faisal Stadium in Jeddah, Saudi Arabia, during the 1998 FIFA World Cup qualifiers.
