Defence lawyer Pierre Poupart announced Friday he would make the request to the country's top court.
Crown prosecutor René Verret was expecting to set a new trial date at Turcotte's Friday appearance at the courthouse in St-Jerome, Que.
The Quebec Court of Appeal ordered a new trial in November after overturning Turcotte's not criminally responsible due to mental disorder verdict in the stabbing deaths of his two children.
More to come.
