Peter and his family were left devastated in December 2012 when Andrew passed away from bowel cancer, and now their raw emotions have resurfaced after discovering the phoney Facebook page.
Entitled 'RIP Andrew Andre', the page claims to be raising money for children with cancer and the person writing the posts has been signing off "Peter x". It also uses dozens of pictures of the Andre brothers.
In one post, the user even claims to be offering Peter Andre show tickets to one person who donates to the cause. It reads: "We have a Pair of Front Row Tickets to see the show at Epsom Downs Racecourse on July 10th with Meet and Greet and VIP Package - to give away to one of the lovely people who donate. Winner will be announced in a few days time at Random. Peter x."
However, Peter and his management have now hit back at the Facebook page and confirmed that the Australian pop star has nothing to do with it.
A statement on Peter's website this afternoon said: "This is a notice regarding the fraudulent page 'RIP Andrew Andre' on Facebook.
"This page has nothing to do with Peter and he has never posted on the page either personally or via his management company.
"He is disgusted that individuals would prey on vulnerable people and impersonate him in a bid for money.
"The only official Facebook page for Peter is 'Peter Andre Fan Page."
It continued: "Please spread the word. The page has been reported to the relevant authorities." Peter posted a link to his statement on Twitter, telling fans: "Guys please read this..."
Peter's brother Andrew was first diagnosed with cancer in February 2012. In the months that followed, Peter flew him to the UK so he could receive treatment at a top London hospital and cancelled his tour as his condition worsened.
Tragically, Andrew lost his fight with the disease on 16 December that year, aged 54. Since then, Peter has launched The Peter Andre Foundation to raise money for Cancer Research UK.
For more information about the Peter Andre Foundation, click here.