Justin Bieber has been branded ''disgusting'' for spitting at fans.

The 'Believe' hitmaker was slammed after showering devoted supporters waiting outside the Hazelton Hotel in Toronto, Canada, on Thursday (25.07.13) with his saliva, much to the amusement of his friends.

However, others took to twitter to condemn his behaviour.

Katie Langley wrote: ''Justin Bieber spat at his fans from a balcony because he was bored. That's just downright disgusting.''

Blogger Rebekka-Mary Darling added: ''Justin Bieber spitting? Seriously? Can't you afford a tissue with all your millions? It's revolting.''

And gossip columnist Rob Shuter wrote: ''I'm so over this clown.''

Despite his antics, Justin had earlier praised the waiting fans.

Posting a video of the crowds outside the hotel on Instagram, he wrote: ''I wake up this morning to this :) Best fans in the world. #beliebers #sexyfans. (sic)''

The incident is the fourth spitting controversy the teenage star has been involved in this year.

Earlier this month, DJ Addison Ulhaq claimed the 'Baby' singer spat in his eye, nose and mouth and insulted him during a row at the Social Room in Columbus, Ohio.

In March, Justin denied allegations from one of his neighbours that he had spat in his face during a row, and in January a woman claimed he or a friend had spat in her drink at a North Carolina gym.