The fireworks, shot up to seven-storey, were laud enough to be heard from the neighbouring public housing estate of Yishun.
The display lasted for five minutes. No one was hurt and there was no damage to any property, according to the report.
District Judge Marvin Bay said the court has to take a strict view of Jeevan's use and possession of fireworks, and sentenced him to three weeks' jail and 5,000 Singapore dollars (USD 3,685) on Thursday.
He said the detonation of fireworks can cause serious injuries and pose a risk of fire, noting that they were set off close to public housing.
Jeevan, who was unrepresented, said in his mitigation that he was the sole breadwinner of his family and was taking care of his mother-in-law who was diabetic and blind.
The man, who had a record of giving false information to a public servant in 2017, was also convicted of giving false information to a police officer during investigation into the firework incident. He had tried to put the blame on someone else.
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