A body of a woman, with its lower portion missing, was found stuffed in a travel bag inside a drain in Amar Colony area of southeast Delhi on 3 December.
With this, bodies of four unidentified persons have been found in south and southeast Delhi in the last 10 days.
The body was stuffed in a black travel bag which was dumped in the drain near a bus stand on Captain Gaur Marg. The woman was in her thirties, a police officer said.
The woman's the hands were tied and the lower part of the body was missing. It is suspected that stray animals had eaten portions of the remains, the officer said, adding a case of murder has been registered and investigation is on.
On Friday, a man's body with its lower part missing, nose and ear sliced, and neck slit was found in Sangam Vihar area.
In Munirka, the body of a woman with her head severed was found in a sewer. Body of a young woman with her throat slit was found in south Delhi.
Locals are being questioned to know if they noticed any suspicious activity in the area. Efforts are also being made to identify the victims, police said.