More reports of Christian Bale’s bad temper are emerging following the alleged assault on his mother and sister, with sources claiming the actor flew into a rage on the set of the forthcoming film Terminator 4 just last week.

The Batman star, 34, was arrested in London on Tuesday over allegations he attacked his mum Jenny, 61, and sister Sharon, 40, at the capital's Dorchester Hotel on Sunday night.

Bale, who has denied the accusations, was subsequently released on bail but reports have now emerged online claiming that he also lost his temper while shooting action movie Terminator 4 at Kirtland Air Force Base in New Mexico.

According to TMZ, the actor became incensed when he thought Shane Hurlbut, the director of cinematography, messed up a shot.

The site claims Bale screamed, "I will kick your ass" to Hurlbut, before hurling several other insults at him, in front of hundreds of cast and crewmembers, as well as Military Police officers.

However, other sources have played down the reports, saying Bale was simply "extremely tired and having a bad day".

Forget bad day, it seems like he’s having a bad week!

Bale is due to return to London to face possible assault charges in September.