Sydney man charged with stabbing murder

A man has been charged with murder over the fatal stabbing of a man in broad daylight at a shopping strip in Sydney's southwest.

Emergency services found the 41-year-old victim bleeding heavily from a stab wound to his leg after they were called to a shop on Beamish Street, Campsie about 11.30am on Thursday.

Another 41-year-old man who witnessed the incident was also punched in the face, police say.

Paramedics treated the stabbing victim at the scene before taking him to St George Hospital in a critical condition.

He died later that evening.

A 41-year-old man and 30-year-old woman were arrested in Lakemba later on Thursday, and the man was charged with murder and common assault.

He was refused bail to appear at Burwood Local Court on Friday.

The woman was released without charge, but inquiries continue, police said.