SINGAPORE - A 21-year-old man was arrested on Wednesday (March 7) after a pinhole camera was found in a toilet in Nanyang Technological University (NTU) earlier this month.

The police said in a statement on Thursday that the man was arrested for his suspected involvement in a public nuisance case.

A 58-year-old woman made a police report on March 1 when she came across the pinhole camera in a handicapped toilet in basement 1 of the Humanities and Social Sciences building.

The camera was supposedly hidden inside a plastic hook that was mounted on the side of the door facing the toilet bowl.

She noticed that the hook, which had an air freshener pack hanging on it, was placed in a relatively low position, just above the air vents on the door and at the same level as the toilet bowl.

Officers from the Jurong Police Division conducted extensive probes and inquiries before they established the man's identity, the statement said.

Preliminary investigations revealed that the man is involved in other similar cases.

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A laptop, a mobile phone and two pinhole cameras were seized as case exhibits. Investigations against the man are ongoing.

If found guilty of public nuisance, the man faces a maximum fine of $1,000.

If convicted of insulting the modesty of a woman, he may be punished with a jail term of up to one year, a fine, or both.