Police are searching for a man believed to be involved in a fatal stabbing at a unit block in central Sydney.
Emergency services responded to reports of a stabbing about 8am on Thursday at an apartment complex in Pyrmont.
A 44-year-old man was found at the apartment suffering multiple stab wounds. He died at the scene.
Police have been told the 44-year-old, who worked in the building, had an argument with another man who was known to him before he was stabbed.
The alleged attacker is described as being of Mediterranean/Middle Eastern appearance, aged between 35 and 40, and of medium to large build with dark hair. He was wearing a blue suit at the time. A knife was also found by police at the scene.
Police believe the man fled the scene and drove away in a white car.
"We don't believe he's armed but he has been involved in the death of this man so we consider him very dangerous," Acting Superintendent Sean Heaney told reporters in Sydney on Thursday.
Acting Supt Heaney said it was distressing for the members of the public who found the 44-year-old man.
"They're distraught as you could imagine, very, very distraught - the same as the police and other emergency services that turned up not long after," he said.
Anyone who sees the man is urged not to approach him but to call Triple Zero.
NSW Ambulance's Nadia Tomlinson said the type of injury in this alleged attack can cause "significant damage".
"Our paramedics were tremendous in providing treatment to the man, but despite their best efforts there was nothing more they could do," she said in a statement on Thursday.
"The issue with treating these sorts of wounds is that you can't always tell how much damage has actually been done internally."