MANILA - (UPDATED) Renewed activity was recorded on Mayon Volcano on Thursday, authorities said, nearly three weeks after the alert level was lowered due to decreased chances of a hazardous eruption.
There was a "lava collapse" in the volcano, which caused ash, rocks and gases to flow out, Philippine Institute of Volcanology and Seismology Director Renato Solidum told ABS-CBN News.
There was "no eruption," Solidum said, adding that the alert remained at 3, the midpoint of a five-step warning system.
Before the alert was lowered in early March, Level 4, the second highest, was in place since January, requiring the evacuation of thousands.
Phivolcs will observe the volcano's activity for "several days" and if it shows no more swelling or lava release, it might lower the alert level another notch to 2, Solidum told DZMM radio.