The police are now investigating the death of a 16-year-old girl as a murder.
A spokesman said the police received a call for assistance at 12.57pm and officers arrived only to find the girl lying motionless in a bedroom of the 10th floor of Block 856B, Tampines Street 82.
She had apparently suffered two stab wounds to her torso. Paramedics pronounced her dead at the scene and police said a 28-year-old woman has been arrested in connection with the case. The Straits Times understands that the suspect is the maid of the family.