A powerful earthquake hit southern Taiwan overnight, toppling buildings and killing several people in Tainan city.

This footage shows rescue teams working to save people trapped following the collapse of a 17-storey building, after the quake struck just before 8pm GMT.

According to reports, at least three people died in the incident, including a baby.

The Central Weather Bureau said five aftershocks hit Tainan, all of 3.8 magnitude or more.

More than 300 people may have been injured in the quake, according to reports.