Orange-brown smoke seen in videos from the site of the deadly explosion at Iran’s Bandar Abbas port suggests chemicals such as sodium or ammonia may have been involved, CNN reported after geolocating footage from the scene.
Iranian authorities have blamed a “failure to observe safety principles” for Saturday’s blast, which killed at least 70 people and injured more than 1,000, according to state media.
Eyewitness accounts and surveillance video showed a fire starting among containers before the massive explosion. Officials said hazardous materials were improperly stored but have not confirmed which chemicals triggered the blast.
CNN previously reported that two shipments from China, carrying sodium perchlorate — a chemical used to make solid missile propellant — arrived at Bandar Abbas in February and March.
The New York Times, citing a source linked to Iran’s Islamic Revolutionary Guard Corps, also reported that sodium perchlorate may have been stored at the site.
Iranian officials have denied that any military materials were held at the port. An investigation into the cause of the explosion is ongoing.
