Justin Bieber has revealed that his focus is currently on writing new music.

The singer's last full album came in the shape of 2012's 'Believe', with Canadian later releasing an acoustic record too.

He recently teased fans with the prospect of new music by mysteriously uploading the artwork for a forthcoming single called 'Heartbreaker'.

Speaking on Twitter last night (June 9), Bieber said that he has written another new track and that his mind is fully on fresh material. The singer said:

"Really focused on this music. #musicjournals #heartbreaker #newsongs."

He later added: "Wrote another great song last night. Focused."

Bieber meanwhile recently released more tour dates for his Believe world jaunt, with new shows in Asia, South America and Australia confirmed. Watch Justin Bieber perform live below: