LOS ANGELES -- An ankle injury has tripped up Justin Bieber's attempts to complete the terms of his sentence in a vandalism case filed after he threw eggs at his neighbour's house last year.

Probation officials wrote in a report filed Tuesday that Bieber cited a severe ankle sprain he suffered during a soccer game as the reason he couldn't complete five days of community labour as planned in early January. Bieber provided a chiropractor's report stating he was ordered to stay off his feet for a week in early January.

Bieber's attorney Shawn Holley told a judge on Tuesday she expected the singer to complete community labour and anger management counselling -- the remaining terms of his sentence -- by his next court date on May 11.

The Grammy-nominated singer also cited time in the recording studio and the taping of several television programs as reasons for why he hadn't completed his sentence as planned, the report states.

Superior Court Judge Leland B. Harris said the report was favourable to the singer and followed the recommendation of probation officials to give Bieber more time to comply with the sentence.

Bieber, 20, remains on probation after he pleaded no contest to misdemeanour vandalism in July.

He was ordered to complete five days of community service, attend 12 anger management sessions, and pay $80,900 to repair damage to his neighbour's home. He has paid the restitution and completed nine anger management sessions, according to the probation report.

Bieber "has displayed a co-operative attitude and has expressed a sincere desire to be more diligent in completing anger management and community labour," probation officer Darlene Montalvo wrote.

Bieber did not attend Tuesday's hearing.