Carl Frampton showed his support to the Justice for Noah campaign during Friday's weigh-in for his fight against Jamel Herring.
Noah Donohoe went missing after setting off to meet friends on June 21 last year.
The 14-year-old's remains were found in a storm drain in North Belfast six days later.
Since then, his mother Fiona and aunt Niamh have been fighting for the truth about what happened to Noah.
Frampton highlighted the campaign on Friday by wearing a 'Noah's Army' t-shirt at the weigh-in for his fight at The Rotunda Casears Palace Bluewater.
The North Belfast boxer is bidding to become Ireland's first-ever three-weight world champion in Dubai on Saturday night.
There continues to be widespread support for the Justice for Noah campaign.
Last week hundreds of people lined streets from City Hall to Belfast Castle as Noah's mum Fiona made the journey her son never completed on the day that changed their lives forever.
Hundreds stood “shoulder to shoulder” behind Fiona as she made her self-described “pilgrimage to Cavehill”.
