A 77-year-old woman was found dead at her home on Sunday after her son tried to kill himself in Kwai Chung in the New Territories.

The old woman surnamed Liu and her 34-year-old son surnamed Lee lived in a flat in Shing On House in Kwai Shing East Estate, Oriental Daily reported.

Lee, who quit his job to take care of his mother, had employed two Indonesian domestic workers to help as she suffered various chronic illnesses.

At 11am on Sunday, while the two domestic workers were having a day off, Lee jumped from the flat but survived. He was able to tell police his address when they found him on a slope outside Shing On House.

Lee told officers “it is very tough to look after the elderly”. He was sent to Princess Margaret Hospital in a critical condition, police said in a briefing.

Officers found suspicious circumstances in the elderly woman’s death. After breaking into the flat they found the woman had suffered a number of chop wounds and her head was almost cut off, Apple Daily reported.

A bloody kitchen knife was found inside the flat, which police believed was used in the fatal attack on the woman.

There was no suicide note by Lee but officers found a will that stated how to allocate his wealth – the two maids could get HK$15,000 (US$1,922) and $20,000 each, and the rest should be sent to his aunt in Canada, Sing Pao reported, quoting police sources.

Kwai Ching police are handling the case, which they classed as murder and attempted suicide.

The Samaritans run a 24-hour multilingual suicide prevention hotline on +852 2896 0000 or emails can be sent to jo@samaritans.org.hk.