The driver of a train that derailed in northeastern Taiwan, killing 18 people and injuring 187 others, has told a court he disengaged an anti-speeding mechanism prior to the derailment, a court spokesperson said Tuesday.

The driver described his alleged action before the court in Yilan County on Monday night as it weighed a prosecutors' request for the driver's detention for alleged professional negligence resulting in death.

The driver was released on a 500,000 New Taiwan dollars ($16,150) bond Tuesday morning. Prosecutors are expected to continue questioning him in connection with the derailment.