Separate blasts in southern and southwestern Iran killed at least four people and injured several others.

The Ahvaz Municipality Fire Department and Safety Services said the blast occurred at a four-unit residential complex in the Kianshahr neighborhood of Ahvaz in southwestern Iran, killing four people, The Caspian Post reports, citing Iranian media.

The official said the explosion was caused by a leak in the city's gas network.

Separately, an unknown substance exploded in an eight-story building located in an alley off Moallem Boulevard in Bandar Abbas, southern Iran, according to the Fars news agency.

According to preliminary information, around 10 people were likely injured in the explosion, with no deaths reported so far.

More than 10 vehicles parked near the building were also damaged to varying degrees.