Kolkata: A massive fire has broken out in the slums beside the Ahiritola Post office in North Kolkata. 10 fire engines have been pressed into service. According to reports, the fire broke out due to a cylinder burst inside the slum. Police officials from Jorabagan Police Station have arrived at the post. The firefighters are trying hard to bring the fire under control. The incident has led to a massive traffic congestion in the area. Till now, no casualities or injuries have been reported in the incident.