David Lamont, 51, was found beaten and unconscious outside his Pleasanton home Saturday, Sept. 21, 2013.
After five months of investigating the brutal beating of a 51-year-old father outside his Pleasanton home, the Alameda County District Attorney will not be pursuing criminal charges against the alleged attackers.
In a statement sent by Pleasanton police on Friday, authorities cited a "lack of sufficient evidence to conclude a public offense was committed" on Sept. 21. That's when David Lamont, who owns a marketing agency with his wife, Agnes Lamont, was beaten into a coma outside his Middleton Place home.
"The case has been closed and no further investigation is pending," the statement read.
NBC Bay Area first broke the story of the attack, which occurred -- police and the Lamont family said -- when Lamont went outside after midnight to tell "several subjects, possibly teenagers" that they were making too much noise.
After a while, when Agnes Lamont came out to check on her husband, he was lying in the street with a head injury.
In a phone interview, Agnes Lamont told NBC Bay Area, "The whole situation is very upsetting, but the family is focusing on healing and moving on."
She declined to elaborate and asked that the media not contact her anymore.
In September, Agnes Lamont spoke freely with NBC Bay Area, weeping outside Eden Medical Center, where her husband lay. His medical condition was not clear on Friday. He and his wife have two daughters.
Police had said in late September that they had ID'd an 18-year-old "person of interest" in the case, but no arrest was ever made.