A homicide investigation is underway following the death of a man in Waikato Hospital.

The man was located with critical injuries at a Clyde Street address in Hamilton East shortly after 8pm on February 7.

A second person had moderate injuries, and both were taken to hospital.

The critically-injured man passed away in hospital on Saturday February 11.

A 20-year-old man appeared in Hamilton District Court on February 8 charged with two counts of wounding with intent to cause grievous bodily harm, and was remanded in custody to reappear on February 22.