Police Constable Gordon Semple was strangled and his body cut up after meeting his killer through the gay dating app Grindr.
Officers found the dismembered remains in a south London flat six days after he went missing on duty.
Officers have found body parts in local bins, river Thames and within an acid bath.
Social worker Stefano Brizzi was arrested after reports of an awful smell coming from the flat in the Peabody Estate in Southwark, south London.
Brizzi was today remanded in custody following an apperance at the Old Bailey.