First responders were trying to get to the scene, while others were trying to flee, Mehrdad Hasanzadeh, a provincial emergency management official, said Iranian state media.
Without providing any details, Hasanzadeh said that the explosion originated from cargo at the city’s Shahid Rajaei port.
Although no other information was provided, state television also said that the explosion had caused a structure to fall. Without providing any details, the Iranian Customs Administration blamed.
The explosion on a “stockpile of hazardous goods and chemical materials stored in the port area,” according to the IRNA news agency.