The trial of former Stephenville Fire Marshal Gary Nabors has been delayed, again.

The trial, for online solicitation of a minor, was set to begin in the 266th Judicial District Court Thursday.

The delay was requested by District Attorney Jason Cashon who filed a motion for continuance at 9 a.m. just as proceedings were expected to begin.

The delay stems from the prosecutor's inability to produce the key witness in the state's case in time for the trial, Cashon said.

Former Somervell County Sheriff's Deputy Anthony Yokum, who spearhead the undercover investigation by posing as a 12-year-old girl while allegedly engaging in sexually explicit online conversations with Nabors, was not available to testify Thursday.

Yokum is no longer working as a law enforcement official, Cashon added.

A new trial date had not been set at the time of this report.

Nabors, who is being represented by Stephenville attorney Robert Glasgow, has waived his right to a jury trial. District Judge Donald Jones will determine guilt or innocence in the case and assess punishment.

A third-degree felony carries a punishment of up to 10 years in prison.

Nabors, who was arrested in connection with the incident in October 2009, faces four counts of online solicitation.