A 15-year-old girl was found dead at Cliveden at Grange, a condominium in the Orchard area, on March 3.
The police told Stomp that they were alerted to a case of unnatural death at 100 Grange Road at 9.25am.
The female teen was found lying motionless and pronounced dead at the scene by a Singapore Civil Defence Force (SCDF) paramedic.
Based on preliminary investigations, the police do not suspect foul play.
Stomper Khalil said he was making deliveries at the condo at around 1pm when he saw four police cars and a Crime Scene Investigation (CSI) vehicle.
"I saw what I believe was a covered body," he recounted. "The head was partially covered and I saw hair."
Police investigations are ongoing.