Police are investigating the murder of an 80-year-old woman in her Sham Shui Po flat.

At about 9.45am today, a 65-year-old man told Police that the woman had collapsed inside her premises at Mei Choi House in Shek Kip Mei Estate.

Officers entered the flat and found the woman lying on the floor near the kitchen with her hands tied up and mouth sealed. She was certified dead at the scene.