Rihanna postpones Indonesia concert after 'attack' by boyfriend Chris Brown

Rihanna, the R&B singer, has postponed a concert in Indonesia for the second time after claims she suffered "horrific" injuries allegedly at the hands of boyfriend Chris Brown.

Local promoter Showmaster said the William Morris Agency in Los Angeles had told them Thursday's concert in Jakarta would be cancelled.

Promoter Troy Reza Warokka said: "We spoke to Tony Goldring of William Morris Agency and he said the concert had to be cancelled because of an assault case involving Rihanna's boyfriend.

"He offered to reschedule but we don't think we'll take it up, not this year at least. This is her second postponement. Her fans are traumatised and we've spent so much money on production and promotional materials."

The 20-year-old Barbados-born singer pulled out of the Grammy Awards on Sunday amid rreports she was the victim of domestic assault allegedly at the hands of singer-songwriter Brown.

She has reportedly cancelled her 21st birthday party and gone into hiding after it was claimed she may need plastic surgery.

Her injuries are said to include a swollen and bruised face, bloody nose, split lip and bite marks on her forearm and fingers.

Brown, 19, was arrested on Sunday and freed on $50,000 (34,500) bail. He also pulled out of the Grammys.

Website TMZ.com claims an onlooker in LA's residential Hancock Park area called police after witnessing a "loud, violent confrontation". Hours earlier, the couple had attended a pre-Grammys gala at the Beverly Hilton hotel.

The young singer, who has a clean-cut image, has previously spoken of the "terror" he felt when witnessing his mother suffering domestic abuse at the hands of his stepfather.

Kanye West, who toured with Rihanna, said that the reports of alleged abuse were "devastating."

"I feel like, just as a person, I don't care how famous she is or even if she just worked at McDonald's, that should never happen," he said. "It should never come to that place." Rihanna had cancelled a concert in the Indonesian capital in November last year on security concerns following the execution of three Islamist militants behind 2002 bombings on Bali island.