On Monday evening, at about 6pm, a man, who appeared to be completely naked, was spotted walking towards a bus-stop along Ang Mo Kio Avenue 3.
After reaching the bus-stop, he walked repeatedly to and fro.
The man eventually boarded a bus and alighted along Paya Lebar Road, according to Shin Min Daily News. Madam Esca Ng, a civil servant who spotted the man, said she saw what appeared to be a white paint on his private region.
Police have since arrested the man.