SINGAPORE - A man who helped his cabby brother beat up a lorry driver after a minor accident at the Turf Club carpark was jailed for two weeks on Wednesday.

Bus timekeeper Ng Tian Seng, 52, had admitted punching 50-year-old Jani Masdah in the mouth and stomach with his 56-year-old brother Ng Eng Hua on July 24, 2011. Eng Hua was jailed for three weeks last month.

Deputy Public Prosecutor Fong Jing Heng had told the court that Eng Hua's taxi collided with Mr Jani's lorry as both were exiting the carpark.

Both vehicles stopped and the brothers got out of the taxi. They opened the lorry's door before pulling Mr Jani out by his shirt.

Tian Seng showed him the damage caused to the front of his brother's taxi and demanded $1,000. Mr Jani took the brothers to the back of his lorry, telling them that he did not have money to pay and that he was not in the wrong.

Mr Fong said Tian Seng then pushed the victim against the side of the lorry and held him by the neck before punching him in the mouth and knocking a tooth out. Eng Hua punched the trucker in the stomach.

Mr Jani's brother, Jamil, 51, who was a passenger in the lorry, pulled the Ngs away and tried to reason with them while his brother called police.

Mr Jani was taken to hospital with cuts to his lip and later needed another three teeth extracted.

The maximum penalty for causing hurt is two years' jail and a $5,000 fine.