Black Eyed Peas have pulled out of their slot at the forthcoming Michael Jackson tribute concert due to "unavoidable circumstances". 

The 'Boom Boom Pow' stars were due to break their hiatus to perform at Michael Forever, which will be held in Cardiff on October 8. 

Chris Hunt, executive officer for the event's promotion company, released a statement regarding the sudden change of plans and it reads:

"It is with regret that we announce the removal of Black Eyed Peas from the Michael Forever bill, but I look forward to a great night with other earth shattering artists."

Watch the group's recent performance of 'Don't Stop The Party' here: