A strong tsunami triggered by a magnitude 7.5 earthquake has hit a coastal Indonesian city, officials say.

Waves of up to 2m (6.6ft) high swept through Palu on Sulawesi island, not long after authorities had lifted a tsunami warning.

Officials have reported five deaths – but it is not clear if those were as a result of the tsunami.

Last month, a series of earthquakes struck the Indonesian island of Lombok, killing hundreds of people – the biggest on 5 August killed more than 460.

The earthquake hit just off central Sulawesi at a depth of 10km (6.2 miles) just before 18:00 (11:00 GMT), the US Geological Survey said.

A tsunami warning was issued, but lifted within the hour.