The start of Robert Baltovich's second-degree murder trial has been delayed for the second time in less than a week.

The trial was originally scheduled for a Monday start and then shifted to Wednesday. 

On Wednesday, prosecutor Phil Kotanen told the jury that "with regret" he requires "another indulgence."

"I am simply not in a position to commence the trial at this point," he said.

The trial is now scheduled to begin Tuesday at 10 a.m.

Baltovich is charged in the murder of 22-year-old University of Toronto student Elizabeth Bain, who went missing on her way to school in 1990. Bain and Baltovich were dating at the time.

Her body was never found.

This is the second time Baltovich has been tried in Bain's death. In 2004, the Ontario Court of Appeal overturned a lower court's decision on Baltovich's first trial.

This trial is expected to last six to eight weeks, with the Crown calling as many as 50 witnesses.

The trial was originally scheduled to begin in 2007, but faced setbacks when the judge presiding over the case was appointed to a new position.

CTV's legal analyst Steven Skurka said Wednesday that while it is rare for a murder case to be successfully prosecuted without finding the body, it is not impossible.

"It's a circumstantial evidence case," said Skurka, appearing on CTV's Canada AM. "It's pieced together by various witnesses who are going to tie Robert Baltovich -- according to the prosecution -- to the murder of Elizabeth Bain.

"Her whereabouts, and what she did and who she spoke to in those last days before she disappeared are going to be a prominent part of the case," he said.

Baltovich, 42, has always maintained his innocence.

He currently lives in Peterborough working as a librarian and taking care of his ailing father.

With files from The Canadian Press