Heavy rainfall in Iran's impoverished province of Sistan and Baluchestan has caused the Kajoo river to overflow its bank, cutting off access to dozens of villages.

"Rains have caused significant damage to homes, agricultural land and roads in Qasr-e Qand district," district governor Ahmadreza Hashemzehi said.

"The road connecting 33 central villages on the riverbank remains cut off," Hashemzehi added.

Lack of government assistance has compounded the woes of the flood victims, who urgently require aid, the Haalvsh news agency quoted local sources as saying.

In recent days, heavy snowfall, rain, blizzards and frost have also caused widespread disruptions across several Iranian provinces.

In some areas, schools and offices were forced to close due to a critical gas shortage.

Authorities in Tehran, Gilan, Alborz, South Khorasan, Razavi Khorasan, North Khorasan, Mazandaran, Golestan, Ardabil, West Azerbaijan and East Azerbaijan have issued warnings over gas consumption.