Iran says 'initial assessment' for explosion, fire, at Bandar Abbas port indicates mishandling of dangerous chemicals.

The death toll from a powerful explosion at Iran's biggest port of Bandar Abbas has risen to at least 40, with more than 1,200 people injured, state media reported on Sunday, as firefighters worked to fully extinguish the fire.

President Vladimir Putin has offered Iran Russian help in dealing with the aftermath of a blast that rocked the Iranian port of Bandar Abbas and has expressed his condolences over the loss of life, the Kremlin said on Sunday.