Canadian pop star Justin Bieber is to be formally charged with vandalism in Los Angeles today over an egg-throwing attack.

The teen idol was not expected to appear at today's hearing, according to the LA prosecutor's office.

The 20-year-old star has been in trouble with the law in recent months.

He is also facing charges in Florida over an illegal street race in his Lamborghini in Miami Beach on 23 January.

He has pleaded not guilty to driving under the influence of substances, resisting arrest and driving with an expired license.

In Canada, he is accused of assaulting a limousine driver last year.