SINGAPORE - A fire broke out at a Housing Board flat in Woodlands on Thursday (May 11) night, with a crowd gathering to watch as flames flared out of a window.

The Straits Times understands that the fire started on the fifth floor of Block 818, Woodlands Street 82, at about 8pm.

Videos posted on Twitter showed the flames raging across what appears to be two floors. A small crowd was spotted gathered at the void deck opposite as they watched the blaze being put out.

ST understands that police officers and Singapore Civil Defence Force (SCDF) officers are on the scene.

SCDF told ST it was alerted to the fire at 8.11pm and dispatched two fire engines, two Red Rhinos, two fire bikes, one ambulance and one support vehicle to the scene.

"Upon arrival, the bedroom of a unit at level five was totally engulfed in flames," said the SCDF officer. Flames were also seen leaping out of the bedroom window towards the bedroom of the unit at the sixth floor.

The fire spread to the sixth floor and about 40 residents were evacuated.

SCDF extinguished the fire using three water jets and there are currently no reported injuries.

The cause of the fire is still under investigation.

ST has contacted the police for more information.