SINGAPORE - Three men, aged between 25 and 29, have been arrested for their suspected involvement in a robbery case, said police on Monday (June 25).

The robbery took place in a private residential unit in Balestier Road on Sunday at about 2am, said police in a statement.

After ground inquiries, police officers from Tanglin Police Division arrested the three men on the same day.

Preliminary investigations found that the trio had impersonated police officers and approached the victim, claiming to be conducting checks in the unit and threatening to arrest her.

They then took cash totalling about $15,000 and an iPhone, and fled the scene.

If convicted for robbery, the three men will face between three and 14 years' jail, and at least 12 strokes of the cane.

In its statement, the police reminded the public to be vigilant and be wary of people who may impersonate police officers for criminal acts.

"If in doubt, they should request for the police officer's warrant card to verify his identity before complying with the instructions of the officer," said the police.

"If they are still unsure of the person's credibility as a police officer, they should call 999 for assistance."