TEHRAN -- At least five people were injured in US-Israeli attacks on several petrochemical companies in Iran's southwestern Khuzestan province on Saturday morning, the semi-official Tasnim news agency reported.

The firms, identified as Fajr 1 and 2, Regal, Amirkabir, Bandar Imam and Buali Sina, were hit at 10:47 am local time (0717 GMT), the report said.

It quoted Valiollah Hayati, Khuzestan's deputy governor for security and law enforcement affairs, as saying that the possibility of further casualties is very high.

He added the Shalamcheh border trade terminal in Khorramshahr city was also attacked and sustained serious damage.

The Mahshahr Special Petrochemical Zone, where the companies are located, has been evacuated, the report said.

On Feb 28, Israel and the United States launched joint attacks on Tehran and several other Iranian cities, killing Iran's then Supreme Leader Ali Khamenei, along with senior military commanders and civilians. Iran responded by launching waves of missile and drone strikes targeting Israel and US assets in the Middle East.