A man has been violently stabbed to death by a stranger at an intersection south of Brisbane.

Emergency services were called to the intersection in Woodridge, Logan about 5am today and found a 40-year-old man laying in the street.

Paramedics treated the man at the scene before he was taken to Princess Alexandra Hospital in a critical condition.

Logan Police Area Command acting detective inspector Chris Joy said the man’s injuries were “severe”. The man later passed away in hospital from his injuries.

“Quite clearly, when an ambulance arrived, it was evident he had sustained a terribly violent assault,” Mr Joy told reporters this morning.

“There was probably more than normal treatment delivered to the victim on the side of the road because of the serious nature of the injuries … (They were) extremely violent injuries.

“At the time of being transported, his injuries were clearly life threatening.”

Police said the victim and his alleged attacker, a 40-year-old man did not know each other previously.

“The inquiries to date certainly support the fact that they hadn’t previously had any contact with each other,” Mr Joy said.

“There’s nothing to suggest that this is anything other than a random assault, which of course is very concerning, but there doesn’t seem to be any known history between the two people involved.”

The man is now assisting police.

A man is being questioned by police and another man is dead after a stabbing at an intersection in Woodridge this morning. https://t.co/gn9BxF3kTD #7NEWS pic.twitter.com/mbZ1BAvR3H — 7NEWS Brisbane (@7NewsBrisbane) April 26, 2019

Anybody else with information about the incident, or who may have dashcam footage or CCTV, is urged to contact police.