A River Valley High School teacher was knocked down by a van at a traffic crossing outside the school on Tuesday.
Chemistry teacher Mrs Eileen Pua Jiu Er was crossing a road along Boon Lay Avenue at about 12.15pm when the accident occurred.
Her husband, Mr Cynefrid Pua, said in a Facebook post that she has broken her ribs, among other bone fractures, and has a blood clot in her head. She is being treated at the National University Hospital.
The 31-year-old teacher told Chinese evening daily Lianhe Wanbao that she took her time to cross the road when the traffic light turned green, but was knocked down by a speeding car.
However, Mrs Pua said the driver of the van had insisted that she had dashed onto the road. Closed-circuit television footage from the school only showed her crossing the road, but could not capture if the traffic light was green.
Her husband is appealing for eyewitnesses to assist the police in their investigations.
In response to queries, the police said they were alerted to the incident and Mrs Pua was conveyed conscious to the hospital. Investigations are ongoing.