a MAJOR search involving gardai, the Civil Defence and local volunteers will take place today in Finglas for missing pensioner Thomas Kennedy.
It comes 11 days after the 81-year-old disappeared without trace
The last sighting of Mr Kennedy was on July 29 outside his home in Finglas.
"He has just simply vanished off the face of the Earth," said his daughter-in-law, Clare Kennedy.
"He was putting the bins out and we don't know if he ever went back in. He was seen putting the bins out at 9.30pm. That is the last confirmed sighting."
Ms Kennedy, who is married to Mr Kennedy's son Paul, said the large contingent of searchers will meet at 11am at the scouts' den in Cardiffsbridge Road, Finglas.
The GAA will be asked to display the pensioner's photo on the big screens in Croke Park today, ahead of the Dublin v Monaghan match.
Ms Kennedy also hopes that rather than going to the pub before the game, fans might volunteer to help in the search.
"The more people we have, the more areas we can search," she said. "We've had unconfirmed sightings of him in Howth, Bayside, Phibsboro, Stoneybatter and Cabra."
The family also wants people around the country to keep an eye out as Mr Kennedy had his bus pass with him.
It was revealed this week that the sniffer dog used in the ongoing search was donated by the Peggy Mangan foundation.
Search dog Max joined the team of volunteers who helped look for missing pensioner Mrs Mangan last December.
The Kennedy family has asked users of Dublin Bus to contact them if they recall seeing someone of Mr Kennedy's description.
He is about 5ft 4in, of slim build with short grey hair. He was wearing a black rain jacket with a hood, a short-sleeved white and blue polo shirt and dark chinos.
His family said he had no plans to meet anyone, and it is out of character for him not to return home.