Police are seeking witnesses following what they are describing as a "vicious assault" in Napier on Wednesday afternoon.
Police were called to the assault on Latham Street just after 3pm.
A police spokesperson said the victim sustained critical injuries and has been hospitalised.
"Police would like to speak to anyone who witnessed this attack, and anyone in the Latham Street area who may have CCTV footage," the spokesperson said.
The alleged offender is described as a male in his mid-20s, of slim build, with short hair. He was wearing dark clothing and after the attack, he left the area on a motorbike.
Police are also seeking the motorbike helmet worn by the alleged attacker, which was taken from him by a concerned onlooker, in an attempt to prevent him from leaving.
A scene examination has been completed and police will continue to have a presence in the area.
Anyone with information that may assist the police in locating the alleged offender are urged to call 105 and reference event number P057384570. Information can be provided anonymously via Crime Stoppers on 0800 555 111.
