A group of friends from Singapore who were in Phuket for a holiday first realised that something unusual was happening on Wednesday (April 11) when they saw people running in the streets.
Recalled Mr Surinder Singh, a 33-year-old self-employed Singaporean: "I thought they were being chased by police. And then I saw 10 more (running). Then, a procession of motorbikes..."
That was how they learnt that a tsunami warning had gone off, due to two earthquakes that had hit Indonesia on Wednesday evening.
The quakes were of magnitude 8.6 and 8.2, and tsunami warnings were issued for several countries, including Malaysia and Indonesia. The warnings have since been lifted.
In Singapore, tremors were felt in several parts of the island, but the Singapore Civil Defence Force said there was no cause for alarm.