SINGAPORE - A man hurled two dumbbells and several other objects from the 22nd floor of a block of flats in Jalan Kayu, which shattered the windscreen of a van, a court heard.

For his rash act to endanger the personal safety of others, part-time delivery assistant Jai Vicknesh Kandasamy, 35, was jailed for one month on Thursday (Oct 19).

He was fined $800 in default for four days' jail for using abusive language towards a police officer at the void deck of a block at Jalan Kayu on April 11, 2017.

After convicting Vicknesh of the two charges on Sept 19, District Judge John Ng admonished him, saying the dumbbells he had thrown could have killed someone walking below the block.

"Eighty per cent of our population live in HDB flats. You are not throwing some tissue paper, toilet roll but dumbbells. It will be too late if you hit somebody. In this case, it hit a car and affected somebody's livelihood,'' he said.

Vicknesh had also thrown down a chair, two bamboo poles, shoes and two laundry racks.

Deputy Public Prosecutor (DPP) Chong Kee En told the court that Vicknesh, Ms Jeya Jayaram, 32, and Mr Subramaniam Ellan, 29, turned up at the home of Ms Jayaram's former boyfriend, Mr Karthikeyan Murty, 32, on the morning of April 11.

Ms Jayaram insisted that they speak outside. Initially, Mr Karthikeyan was outside but quickly walked back in when he saw the duo, but not before being punched by Ms Jayaram.

She shouted loudly and demanded to know what Mr Karthikeyan had been saying about her to others, said DPP Chong.

Vicknesh then threw the items from the 22nd floor. It is not stated in court papers where the items were initially. They shattered the windscreen of a parked Toyota Hi-Roof van, which cost $700 to repair.

Sergeant Lee Jin Wei from Sengkang Neighbourhood Police Centre arrived to interview the trio. But initially, they were not cooperative.

Vicknesh scolded the officer and stated that he did not want to talk to him as he was merely a sergeant. He felt that the sergeant was rude and scolded him with a vulgar word four times.

Vicknesh said through his lawyer that he was intoxicated and was not thinking rationally when he threw the items down "in a fit of anger''.

He could have been jailed for up to six months and/or fined up to $2,500 for the rash act. For using abusive words, he could have been fined up to $5,000 and/or jailed for up to 12 months.