Lisa Bennett’s remains were then mistakenly incinerated at a community waste facility.
The defendants were not charged with manslaughter because pathologists could not “legally link” the attack and Moustafa's death.
The body was wrapped in a duvet cover, with plastic bags over the head.
The charges come after a judge received death threats for granting them bail.
Juror Theodora Dallas who carried out internet research at home while sitting at a criminal trial was jailed for six months