A second round of tremors have been felt in Singapore.

Callers to the MediaCorp News hotline said they felt the tremors again at around 1.50pm.

This came just two hours after the first tremors were reported at about 11.50am.

The National Environment Agency said a second earthquake hit Sumatra at 1.49pm and measured 6.1 on Richter scale.

Calls to the MediaCorp News hotline had come from various parts of the island, including Ang Mo Kio, Aljunied, Circuit Rd, Choa Chu Kang, Serangoon, Admiralty, Woodlands and Whampoa.

One caller from Aljunied area reported feeling the tremors twice - once on 11.48am and another one at 1.53pm.

If you too felt the tremors and have any details, do call us on the news hotline at 68222268.

You can also send your pictures and videos to yournews@channelnewsasia.com. - CNA/ch