The head of the World Health Organization has warned that damage to petroleum facilities in Iran could contaminate air, food and water, after residents in Tehran reported what they described as black rain following strikes on fuel sites around the capital. The strikes, carried out overnight into Sunday, March 8, hit multiple oil storage facilities and a petroleum transfer centre in Tehran and nearby Alborz. Fars news agency reported that four tanker drivers were killed in the attack on the transfer centre. Israel said the facilities were used for military infrastructure. By Sunday morning, thick smoke had spread across Tehran.