London, July 23 (IANS) British actor Christian Bale, who attended the premiere of "The Dark Knight" with the shadow of arrest and an allegedly violent family row hanging over him, voluntarily went to a London police station after the event.

Police decided to let him attend the event just hours after his mum Jenny and sister Sharon accused him of assault. But Tuesday Bale was arrested after he voluntarily went to a London police station. Cops spent four hours grilling him over the assault claim before he was released on bail without charge, thesun.co.uk reports.

He denies the allegation.

Bale, 34, had booked his relatives into the five-star Dorchester Hotel in London's West End so they could attend the premiere. But they hurriedly left and returned home to Dorset.

A hotel insider said: "There were no problems in any public areas. The family left very hurriedly and without saying much to each other, but the news about this so-called assault