Police are appealing for public assistance to locate a man wanted on an outstanding warrant in the Illawarra region.
Allan Martin Simpson, aged 47, is wanted on an outstanding warrant over alleged property, traffic, trespass and theft offences.
It is understood police may wish to speak to Mr Simpson regarding the train derailment at Kembla Grange on Wednesday morning.
He is described as being of Caucasian appearance, between 170cm-180cm tall, of medium build with black hair, brown eyes and a beard.
Police say Mr Simpson has tattoos on his neck and is known to frequent the areas of Wollongong, Shellharbour and surrounds.
Anyone who knows of Mr Simpson's whereabouts is urged to Lake Illawarra Police Station immediately on (02) 4232 5599 or Crime Stoppers on 1800 333 000.
Anyone with information Mr Simpson's whereabouts is urged to contact Crime Stoppers: 1800 333 000 or https://nsw.crimestoppers.com.au.
Information is treated in strict confidence.