Nielsen was arraigned at the Lagos High Court sitting on Wednesday.
The proper trial of the 53-year-old will resume June 28.
Nielsen pleaded not guilty to the murder charges when he was arraigned in court today.
Peter Nielsen allegedly strangled his wife and daughter to death.
A close associate of Alizee confirmed that the singer and her daughter were strangled to death.
It is still unclear what led to the murder of mother and child.