Blast halts Iran gas flow to Turkey

The flow of Iranian natural gas to Turkey has halted after an explosion hit a gas pipeline in eastern Turkey, a senior Iranian official has told Iran's semi-official news agency.

"Iran's gas flow to Turkey has temporarily stopped because of a blast by some opposition groups inside Turkey around 1830 GMT (4.30am AEDT) on Thursday night," Interior Ministry official Majid Aghai told Tasnim.

Sabotage is common on pipelines leading into Turkey from Iran and Iraq, where the Kurdistan Workers' Party (PKK) armed group is based.

A two-year-old ceasefire between the PKK and the Turkish state collapsed in July 2015, triggering renewed violence.

The PKK has fought a three-decade-old insurgency that has killed more than 40,000 people.

It is designated a terrorist group by Turkey, the US and the European Union.