UPDATE: The trial for one of the men charged in the murder of nursing student Holly Bobo has been postponed.

The trial for Zach Adams was scheduled to begin on Monday but will now start Sept. 11.

On Thursday, Judge C. Creed McGinley apologized to the jury and the courtroom for the delay.

"I'm doing something I've said time and time again I would not do," McGinley said.

Bobo's family was visibly devastated when the judge announced the trial would be delayed. The victim's mother, Karen Bobo, was crying and shaking her head.

The family has waited six years for justice, and now, they will have to wait even longer.

Prosecutors said they realized just a few days ago that there was a possibility that this case could be delayed yet again.

The reason for the delay centers around a gun. The prosecution recently discovered a gun and introduced it as evidence, but the defense team now needs time to test it.

"It's been over six years. Every minute of it, every hour of it, has been painful, so to know that there's two more months of it is hard, but it's necessary. We'll be here in September, and they will too," said prosecutor Paul Hagerman.

The judge plans on using the same jury pool for the trial. Jury selection will begin on Sept. 9.

Bobo disappeared from her Decatur County home six years ago.

Zach Adams, Dylan Adams and Jason Autry were all charged in her murder three years ago.

ORIGINAL STORY: Jury selection for one of the most high-profile murder cases in Tennessee history is set to begin Thursday.

Holly Bobo. WSMV

Zach Adams will stand trial, charged with the murder of Holly Bobo, a west Tennessee nursing student that disappeared in 2011.

RELATED: Trial date set in Holly Bobo murder case

Adams is one of two brothers accused of killing Bobo, 20.

Zach Adams

Three years after Bobo’s death, her remains were found in a wooded area in Decatur County.

Adams’ brother Dylan is expected to plead the fifth during the trial.

RELATED: Suspect in Holly Bobo murder case may make plea deal

Prosecutors are expected to introduce a gun as evidence during the trial, but it’s unclear what the connection to the case is.

A third man, Jason Autry, is also charged in the investigation.

Holly Bobo murder suspect Jason Autry was led into the Decatur County Courthouse on April 30 saying, ‘Please pray. I need help.’