Over more than a week, Foo Jia Hong made 1,035 silent calls to neighbourhood police centres.
He told the court he did it for fun and enjoyment.
On 26 August 2026, the 37-year-old Singaporean was sentenced to 23 days' jail after pleading guilty to one charge of voluntarily obstructing officers at Yishun Neighbourhood Police Centre from carrying out their duties.
Three similar charges involving other centres were taken into consideration.
Four Centres, One Week Of Silence
According to The Straits Times and court documents, Foo made the calls between 21 and 29 April.
Yishun Neighbourhood Police Centre received 425 calls. Bedok received 308. Geylang received 278. Ang Mo Kio received 24.
He stayed completely silent when officers answered.
Of the 425 calls to Yishun, officers answered 330. The rest were not picked up.
The prosecution said the unanswered calls still blocked the lines. Later callers were put on hold in a queue, so genuine calls could not be answered promptly.
A SIM Card From A Second-Hand Phone Cover
Foo used a SIM card registered under a foreign worker's name.
Deputy Public Prosecutor Ng Jun Kai told the court Foo had found the card inside a second-hand mobile phone cover he bought at a pasar malam in Ang Mo Kio in early 2026.
Mothership reported that Foo checked and found the SIM came with cheap call time and data, then topped it up with his EZ-Link card.
He got the NPC numbers from call directories or leaflets.
The foreign worker told authorities he had thrown the SIM away. Using someone else's registration also dragged that worker into the investigation, the prosecution said.
Police arrested Foo on 11 May.
23 Days, Not Two Weeks
After his arrest, Foo was remanded at the Institute of Mental Health for assessment. He has autism spectrum disorder and a mild intellectual disability.
Prosecutors sought three to five weeks' jail, saying IMH found no contributory link between those conditions and the offences.
His lawyer asked for two weeks, arguing that calling NPCs is not the same as dialling 999.
The judge said the court had to weigh Foo's mild intellectual disability, but deterrence came first.
If you ever feel the urge to dial a police centre and say nothing 1,000 times, do not. The line on the other end is not a toy.
