A man covered in blood and brandishing a large knife has been chased by witnesses through Sydney's CBD after a suspected stabbing incident.
Eyewitness footage of the man being arrested near Wynyard Station shows him being held down by police and pedestrians.
A spokeswoman for NSW Police told 7NEWS.com.au the man was taken into custody on Clarence Street about 2pm Tuesday, saying, "It is too early to determine whether there were any injuries."
A witness who chased the man could be heard saying: "Do you know how many people you just stabbed, you dog?"
"You just stabbed a chick, mate, in broad daylight."
Sydney CBD 'stabbing': Man with knife taken into custody after witnesses pin him down