A 37-year-old mother died and her two young sons were injured early Sunday after a landslide sent a massive boulder crashing into their home, authorities reported on Monday.

The incident occurred at approximately 5:30 a.m. in Sitio Macopoy, a mountainous enclave in Barangay Mascap, according to a report from the Police Regional Office 4A.

Police identified the victim as a 37-year-old woman, referred to in the initial report as “Risel,” who was pronounced dead on arrival at Ynares Hospital.

Her sons, a 12-year-old and a 2-year-old, suffered injuries in the collapse and were rushed to the same medical facility, where they remain under treatment.

An 18-year-old witness told investigators that her own mother heard the earth shifting and tried to warn the family seconds before the impact.