A 6.1-magnitude earthquake hit northern Sumatra, Indonesia this morning, sending tremors to the west coast of peninsular Malaysia.

However the earthquake, which occurred 40km south-west of Padang Sidempuan, Indonesia and 307km south-east of Klang, Malaysia, did not trigger any tsunami threat, the Malaysian Meteorological Department said.

The Selangor Fire and Rescue Department operations room reported that they received six calls from the public, reporting minor tremors in Klang and Petaling Jaya.

Among the premises affected were the YTL, Selangor State Development Corporation (PKNS) and MCIS-Zurich buildings.

A private sector worker, Normala Zakaria, 30, who lives in a flat in Wangsa Maju said she felt the small tremor for about five seconds while getting ready for work.

"It felt like I was swaying. I thought I was feeling dizzy, but upon arriving at the office I was informed by friends of an earthquake in Sumatra," she said.

Mindanao hit of three strong quakes

Meanwhile, three strong earthquakes shook Mindanao in the Philippines this morning.

There were no tsunami threats to Sabah, the Meteorological Department said.

The earthquakes hit the southern Philippine island at the magnitudes of 6.9, 7.3 and 7.2 at 6.08am, 6.51am and 7.15am respectively.

Residents in the east coast of Sabah would have felt minor tremors, the department said in a statement.

It said that the quake's epicentre was 224km south-western of the Philippine city of Davao and 637km north-east of Lahad Datu, Sabah.

- Bernama