The fire in Bandar Deyr, a port on the Gulf, broke out after welding triggered an explosion, official says.

At least three people have been killed and two others admitted to hospital after a welding accident led to an explosion and fire at a chemical factory in Iran, officials say.

The accident occurred shortly after 11am local time (07:30 GMT) on Wednesday in a methanol storage unit at the Kaveh Petrochemical Company in Bandar Deyr, a city in the southern Bushehr province, Iran’s state news agency IRNA reported.

A fire broke out after welding on a barge at the site ignited an explosion, Kourosh Dehghani, the provincial head of the crisis management organisation, told Iranian state television.

He said firefighters had contained the blaze and were now working to cool the site. No further casualties were expected, he added.