At least four people have been killed and dozens injured after an earthquake in the southern Philippines.

The 6.5 magnitude tremor near Surigao woke people up last night. Residents rushed to open areas and spent the night in parks, local reports said.

There was no tsunami threat from the quake, the US Pacific Tsunami Warning Center said.

The quake took place at a depth of about 10km (6 miles) about 13km east of Surigao, according to the US Geological Survey. 

Provincial disaster-response official Gilbert Gonzales said "The victims died after being hit by falling debris and concrete walls."

A bridge and a hotel collapsed, power and water supplies were cut in some areas and Surigao's airport was also temporarily closed because of cracks on the runway, according to officials. 

"Around 100 aftershocks have been felt and thousands of people have left their home" the Philippines' seismic agency head Renato Solidum told local radio.

The Philippines is located on the geologically active Pacific "Ring of Fire" and it experiences frequent earthquakes.