A massive explosion and fire that rocked a port Saturday in southern Iran, purportedly linked to a shipment of a chemical ingredient used to make missile propellant, has killed at least 40 people and injured around 1,000 others, officials said.

At least 14 people have been killed and 750 injured in a huge explosion at the port of Bandar Abbas in southwestern Iran, according to official Iranian media citing the country’s interior ministry.