A fourth person has been arrested in relation to the murder of Christchurch man Shayne Heappey who died earlier this month.

In a statement, police said a 26-year-old woman is due to appear in Christchurch District Court tomorrow in connection with several charges.

She faces charges of being a party to wounding with intent to cause grievous bodily harm, and accessory after the fact to murder.

A 29-year-old man who was charged with murder earlier this week is also due to appear in court tomorrow.

READ MORE: Murder charge after man's death in hospital

Heappey was admitted to Christchurch Hospital late on Saturday, December 8, but later died of his injuries.

Following a police investigation, two men have been arrested and charged with murder.

A 31-year-old man was arrested and charged with murder on Monday night, and yesterday morning a 29-year-old man was also charged with murder.

Another man, 50, appeared at Christchurch District Court last Tuesday charged with intent to cause grievous bodily harm following Heappey's death.