Chunnu was the first Bangladeshi goal scorer in a WC qualifier (against India). Later he scored the winner against Indonesia. Bangladesh won 2-1, their first ever victory, and their first ever point in WC qualifying matches in the FIFA World Cup Qualifier in 1985. He participated in the 1980 AFC Asian Cup, scoring the second goal in the history of Bangladesh in the Asian Cup in the 88th minute, against North Korea. Bangladesh was eliminated in the first round, with four defeats in that tournament. Later, Chunnu scored two goals in the 1986 World Cup qualifier without progressing from the first round. He is the first Bangladeshi player to score a goal in FIFA World Cup qualification round.