UPDATE: Fourth person dies after Geylang shophouse fire
Three people were found unconscious by firefighters, and were pronounced dead at the scene.
The fourth victim succumbed to his injuries in the hospital.
Nine people were brought to Tan Tock Seng Hospital and Singapore General Hospital, including two firefighters who sustained minor injuries.
The New Paper understands that the unit housed foreign workers.
Investigations are ongoing.
Related report: 3 dead in Geylang shophouse fire