Justin Bieber cancels Oman show

Justin Bieber has cancelled an upcoming show in Oman.

The Baby hitmaker was due to take his beleaguered Believe world tour to the Middle Eastern country on 6 May (13) for a show in the capital city Muscat.

However, he has now ditched the date and offered refunds to disappointed fans.

Bieber has added a second show in Dubai on 5 May (13) in lieu of the axed Oman gig.

A statement from local promoters, Alive Entertainment, reads, "(We) regret to announce that the Oman show (on the Believe tour) will no longer take place (and) due to overwhelming regional demand, a second show in Dubai has today been announced for May 5th."

Fans with tickets to the cancelled Oman show can either apply for refunds or swap their stub for a seat at the additional Dubai show.

The cancellation is the latest blow to Bieber's world tour following a rocky leg in the U.K. during which he faced stinging criticism for leaving fans waiting for almost two hours at a show in London. He also collapsed backstage during a later gig in the British capital and ended his trip by becoming embroiled in a spat with a photographer prior to his last London gig.

He also axed a concert in Portugal just days after wrapping up the problematic U.K. leg.