Wellington police have made an appeal for information after a man was stabbed on Taranaki St on Thursday evening.
Detective Senior Sergeant Tim Leitch said in a statement on Friday evening that the victim and his associate became involved in a lengthy argument with a small group outside the Wesley Methodist church at 8:50pm.
"That resulted in the victim receiving a serious stab wound to the leg."
Snr Sgt Leitch added a passer-by provided "lifesaving" emergency first aid until emergency services arrived.
"He was taken to hospital and is now recovering in ICU after surgery to the wound."
Snr Sgt Leitch said the male offender left the scene along York St after the attack and now police want the public's help in identifying him.
"He is of medium build, around 175cm tall, wearing a dark baseball cap and light-coloured hoodie."
Snr Sgt Leitch added a white Mitsubishi L300 van that had been parked in the church car park left shortly after the stabbing.
"It is believed the occupants may have witnessed the incident and we ask they contact us."
Anyone with information relating to the stabbing is asked to contact police on 105 or report anonymously via CrimeStoppers on 0800 555 111.