A critical incident investigation has been declared after a man died at Erina on Thursday, October 17.
Police were called at about 3.50pm to Terrigal Dr, Erina, following reports about a man and concerns for his welfare.
Officers attached to Brisbane Water Police District arrived and found a man armed with a knife, and wounds to his body.
Police attempted to speak to the man, who was still armed with the knife, and when he refused police directions, a Taser was deployed.
The man was treated by police before the arrival of NSW Ambulance paramedics, who treated the man for self-inflicted knife wounds; however, he died at the scene.
While the man was still yet to be formally identified on Friday, he is believed to be aged in his 50s.
A crime scene was established and a critical incident team from Tuggerah Lakes Police District is investigating the circumstances surrounding the incident.
The investigation is also subject to an independent review.
Anyone with information that may assist investigators is urged to contact Crime Stoppers: 1800 333 000 or https://nsw.crimestoppers.com.au.