- 17 updates
At least 13 people in Pakistan have been killed after an earthquake hit a border area in neighbouring Iran.
Pakistani officials said at least eight people were killed and 20 injured in the town of Mashkeel in the southwestern Pakistani province of Baluchistan, which borders Iran.
Mohammed Ashraf, head of a health center in Mashkeel, said several hundred houses in the town had collapsed.
Three women and two children were also killed when their mud house collapsed in the Baluchistan district of Panjgur.
Video footage showed buildings being evacuated in the city of Dubai, across the Persian Gulf from Iran.
Pakistani officials have told Reuters that the earthquake in Iran has killed at least five people in Pakistan.
The earthquake struck near Iran's border with Pakistan.
Iran has been hit by several deadly earthquakes in recent years, many of which have caused widespread devastation.
- A 6.1-magnitude earthquake hit the south of Iran last Tuesday killing at least 39 people and injuring around 850.
- The deadliest quake in the country was in June 1990. It measured 7.7 on the Richter scale, killed around 37,000 people and injured 100,000.
- The worst earthquake in recent times hit a southeastern province in December 2003, killing 31,000 people and destroying the city of Bam's ancient mud-built citadel.
Figures from the Fars news agency.
A couple from Dumfries who moved to Abu Dhabi have been left shaken by a 7.8 magnitude earthquake which struck Iran at 10.44am GMT.
31-year-old Mark Proudlock and his wife Laura, 30, moved to the middle-east last year and he said the earthquake is the worst he has have ever felt:
The US Geological Survey said the earthquake reached a depth of 9 miles and tremors were felt across the United Arab Emirates and India.
The head of Iran's Red Crescent Society relief and rescue operation, Mahmoud Mozafar, said relief teams have been dispatched to the quake-hit area, the Iranian state-run news agency IRNA reported.
Strong tremors were felt in New Delhi, India, this afternoon that shook tall buildings and sent people running into the streets.
Punjab, Haryana and the Union Territory of Chandigarh also experienced mild tremors, officials said.
There were no immediate reports of any loss of life or damage to property.
Iranian state TV has confirmed that power and communication systems are down in the quake-hit region.
Three helicopters and 20 rescue workers have been sent to the area to deal with the aftermath of the 7.8-magnitude earthquake, according to Abas Aslani, a journalist with Iran's semi-official Fars News Agency.
The Iranian city of Saravan, which is near the epicentre of today's earthquake, has not seen damage, Iran's Fars news agency reported.
Iran's Bushehr nuclear power plant was not damaged by the major earthquake that struck today, an official at the Russian company that built the plant said.
The official at Atomstroyexport, who spoke on condition of anonymity, said he had spoken to a colleague at the plant after the quake and that no damage was reported.
Iran's sole nuclear power plant is near the Gulf coast in western Iran, while the quake struck in eastern Iran near the border with Pakistan.