Updated at 6:00 p.m. with information from a statement issued by Pleasanton Police:
Police are investigating the beating of a man who was found severely injured early Saturday morning. Police officials say they received a 911 hang-up call from a home in the 4900 block of Middleton Place around 12:11 a.m. on Sept. 21. Upon arriving, they found the victim, who was unconscious in the street.
"The victim was seriously injured," Pleasanton Police Sergeant Kurt Schlehuber said.
Police say that they believe several subjects, possibly teenagers, were outside the residence making noise and that the victim went to out confront them when he was attacked.
A short time later, the victim was found outside his home by his wife and was badly injured. The victim, David Lamont, 51, was taken by ambulance to Eden Trauma Center in Castro Valley.
Police say a dark colored SUV was seen leaving the location by a witness.
A friend of the injured man says the victim went to confront a group of teenagers at a loud party in the cul-de-sac when he was attacked. When the man did not return home, the friend says the victim's wife went to look for him and found him badly beaten on the ground and called 911.
The man is comatose in critical condition, according to police.
NBC Bay Area reported that Lamont has two teenage daughters.
Police are not releasing any suspect information at this time and the investigation is on-going. The Pleasanton Police Department is asking for the assistance of anyone who may have information related to this crime. They are encouraged to call the Pleasanton Police Department at (925) 931-5100.
Patch update this story as more information becomes available.