Indian Ocean tsunami alert lifted after Aceh quake

A tsunami watch declared after two major earthquakes off the coast of Indonesia's Aceh province has now been cancelled, the Pacific Tsunami Warning Center (PWTC) says.

Two hours after the quakes - one with a magnitude of 8.6, the other measuring 8.3 - the centre says "the threat has diminished or is over for most areas".

The alerts caused panic as people fled buildings and made for high ground.

There have been no immediate reports of damage or casualties.

India, Thailand and Sri Lanka have also lifted their own tsunami warnings.

The region is regularly hit by earthquakes. The Indian Ocean tsunami of 2004 killed 170,000 people in Aceh alone and some 250,000 around the region.

'Minute of chaos'

Sutopo, a spokesman for Indonesia's disaster mitigation agency, said electricity had been cut in Aceh and there were traffic jams to access higher ground.

"Sirens and Koran recitals from mosques are everywhere," he told Reuters.

Tremors were felt as far away as Singapore, Thailand, Sri Lanka, Malaysia, Bangladesh and India. The French island of Reunion was also on alert.

Along the eastern coast of Africa, Kenya and Tanzania issued their own tsunami warnings.