SINGAPORE - A part-time nightclub security staff member was sentenced on Tuesday (Feb 28) to 23 months' and six weeks' jail after assaulting four people between September 2015 and last June.

Mohammad Ashik Aris, 36, pleaded guilty to causing hurt with a weapon, causing hurt and being in possession of an offensive instrument.

Three other assault charges were taken into consideration during sentencing.

Ashik started his crime spree on Sept 28, 2015 when he was working for Club Paragon 2 at the Concorde Hotel at Orchard Road.

He spotted a pair of twin brothers, Mr Ho Ming Jie and Mr Ho Ming Hao, both 31 years old, having an argument over cars and valet services outside the club at around 5.30am that day.

He shouted at them to stop but Mr Ho Ming Hao told him to go away.

Furious, Ashik armed himself with a 30cm-long metal rod and attacked him.

When the other twin tried to intervene, Ashik used the weapon and hit Mr Ho Ming Jie's face several times until he fell to the ground, bleeding.

Ashik fled the scene and the police were notified.

Mr Ho Ming Jie was found to be suffering from injuries including a fractured nose and a cut on his forehead.

Three months later, Ashik used a 31cm-long knife and attacked a third man, Mr Loh Ping Huang, at Club Gaga at Tanglin Shopping Centre. Court papers did not mention why he attacked him.

Mr Loh's left ring and little fingers were sliced off. His left middle finger suffered a near-amputation.

After the fight, Ashik went to Tan Tock Seng Hospital about four hours later at 9am where he was found to be armed with a knuckleduster.

He went to a Central Narcotics Bureau (CNB) reporting centre at the Jurong Police Divisional Headquarters for a urine test while he was out on bail for these offences on June 20, last year.

He then got into a fight with a fellow drug supervisee, Abdul Rahim Abu Bakar, 45.

Court papers did not mention why they fought but the older man suffered superficial facial bruises and cuts.

Ashik assaulted him again at the same CNB reporting centre a week later.

The court heard, Abdul Rahim is being dealt with separately.

For causing hurt with the weapon, Ashik could have been jailed up to seven years, fined, caned or receive a combined punishment.