Mayon Volcano in the Philippines continued to show signs of intensified unrest, with authorities reporting dozens of volcanic earthquakes and tremors over the past 24 hours while maintaining Alert Level 3, local media reported on Saturday.

The Philippine Institute of Volcanology and Seismology (Phivolcs) said that from the volcano, they recorded 51 volcanic earthquakes, 30 volcanic tremors lasting between two and 45 minutes, as well as hundreds of rockfall events and six pyroclastic density current signals, according to local media outlet the Inquirer.

The institute also reported ongoing lava effusion from the crater, with lava flows extending several kilometers along the Basud, Bonga, and Mi-isi gullies.

Short-lived lava fountaining was also observed.

The volcano emitted 1,482 tons of sulfur dioxide on Friday, higher than the previous day’s level, while a volcanic plume drifted southwestward.

Authorities continued to prohibit entry within the 6-kilometer (3.72-mile) permanent danger zone and warned against flying aircraft near the volcano.

The institute warned nearby communities of potential hazards including lava flows, rockfalls, pyroclastic density currents, moderate explosions, and lahars (mud or debris flow) triggered by heavy rainfall.