Aaron Guilbault, who is 31, is charged with second-degree murder and recently underwent a psychiatric assessment.
Red Deer court heard Wednesday another review is needed to determine Guilbault's possible criminal responsibility.
He is expected back in court on May 1 once that assessment is completed.
The body of former Red Deer city councillor Timothy Guilbault, who was 58, was found in a home near Innisfail last November.
Police have not said how he died.
With six members of his family watching quietly from the gallery, Guilbaut appeared in Red Deer provincial court on Wednesday, wearing a pair of short braids in his thick, red beard.
Defence counsel Patty MacNaughton was scheduled to enter a plea for her client on the murder charge as well as other offences arising from an earlier incident, including two counts of criminal harassment laid in August.
However, the pleas were adjourned when Crown prosecutor Jason Snider said that only one of the two psychiatric assessments had been completed.
Judge David Plosz made a new order for the report, which will determine how the Crown and defence proceed with the charges.