Justin Bieber has left fans guessing after proclaiming that "big things" are due to happen soon.

The singer has been busy creating music as he enjoys some downtime following a couple of brushes with the law.

He was recently pictured alongside Austin Mahone in a recording studio and this sent fans wild.

Bieber has now teased things even further by saying on Twitter that "big things" are coming.

The 20-year-old added: "Put your heart into everything you do."

The 'Believe' man, however, has a trial to face on May 5 as he contests charges of DUI, driving without a valid licence and resisting arrest.

The singer was pulled up by cops earlier this year near the Miami beach after apparently drag racing.

Watch Justin Bieber's recent videos below: