An Australian man who jumped over a barricade and grabbed Hollywood star Ariana Grande has been deported and banned from Singapore.

Johnson Wen, 26, was sentenced to nine days in prison for being a public nuisance and has now been "barred from re-entering Singapore" the Immigration and Checkpoints Authority (ICA) told local media.

Wen pushed past photographers and charged at the actress and singer, who was attending the Asian premier for Wicked: For Good on 13 November. Co-star Cynthia Erivo had to wrestle him away from Grande.

Wen has a history of disrupting concerts and celebrity events, including jumping on stage at Katy Perry's Sydney concert in June this year.

The incident sparked outrage in Singapore, with many accusing him of re-traumatising Grande. The pop star turned actress has spoken of experiencing post-traumatic stress disorder after a suicide bomb attack at her May 2017 concert in Manchester killed 22 people and injured hundreds.