A fire broke out on Wednesday at Iran's Mobin Petrochemical refinery complex in southern port of Assaluyeh, leaving four people injured, state media reported, the latest in a string of blazes in the region.

"The fire ... is now under control," Qassem Qaedi, crisis management coordinator in the southern province of Bushehr was quoted as saying by the state news agency Irna.

Qaedi said the fire has caused no threat to the operations in the South Pars gas fields in Assaluyeh.

In the last few months several petrochemical plants in Iran have caught fire. Iran's oil minister said last month that most of the fires happened because the privatised petrochemical companies have cut their budgets for health and safety inspections.-Reuters