A volcano in the Philippines has begun spewing lava, as authorities warn that a "hazardous eruption" is possible "within hours or days".
In the early hours of Monday, a weak flow of lava began seeping out of Taal volcano - located some 70km (45 miles) south of the capital Manila.
Taal had earlier emitted a huge plume of ash, triggering the mass evacuation of 8,000 people from the area.
Taal is the Philippines' second most active volcano.
A total of 75 earthquakes have occurred in the Taal region, with 32 of these earthquakes ranking 2 and higher on the earthquake intensity scale, said Phivolcs.
"Taal volcano entered a period of intense unrest... that progressed into magmatic eruption at 02:49 to 04:28... this is characterised by weak lava fountaining accompanied by thunder and flashes of lightning," the Philippine Institute of Volcanology and Seismology (Phivolcs) said in a statement.
Situated on an island in the middle of a lake, it is one of the world's smallest volcanoes and has recorded at least 34 eruptions in the past 450 years.
Authorities in the surrounding province, Batangas, have declared a "state of calamity", signifying major disruption.
On Sunday, the volcano emitted a giant plume of ash, with rumbling sounds and tremors also reported.
But Phivolcs director Renato Solidum said that signs of a hazardous eruption, including "flows of ashes, rocks, gas at speeds of more than 60km/h horizontally" had not yet occurred, according to CNN Philippines.
Phivolcs has now raised the alert level from 3 to 4, out of a maximum of 5.
Authorities have also warned of a possible "volcanic tsunami", which can be trigged by falling debris after an eruption, pushing the water and generating waves.
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