Police are continuing their hunt for a man and woman allegedly seen in an altercation with a man found dead with a head wound in Forest Lodge on Friday, after a neighbourhood-wide search failed to find the pair.

Just after midday, emergency services were called to the quiet Hereford Street where they found a man lying in the middle of the road with what a source called a "massive" head wound.

A man was found dead on the street in Forest Lodge, in Sydney's inner west on Friday. Credit:Wolter Peeters

Speaking to the media just after 3pm, Acting Superintendent Sam Crisafulli said police were called to the scene but by the time they arrived, the man had died.

"Police were called regarding a man who had suffered some head injuries. Unfortunately, he was found deceased," he said.