The duo, arrested from Bongaon in North 24-Parganas district, work like middlemen and were trying to smuggle the explosive materials to Bangladesh, SDPO Rupantar Sengupta said.
The explosive materials consisted of ammonium nitrate and another red sustance, he said, adding they were being questioned and the red explosive material was being examined by experts.
The arrested duo told the police that they were carrying the explosives from Gopal Nagar and were going to smuggle them to Bangladesh at Jira border, sources said.