The incident came to light when some passersby noticed an unclaimed blue iron box right outside the metro station, following which the police were informed.
Police broke open the trunk to find body of a young woman stuffed inside.
"The woman appears to be around 25-year-old. Although there was no visible injury marks on her body, there were marks of strangulation on her neck. It seems she was strangled and then her body was stuffed in the box," said a police official.
"There was PK tattooed on her right arm and she was wearing a black and yellow salwar-kameez. She was also wearing a 'mangalsutra' and bangles in both of her hands. There also was a line of vermillion on her head suggesting she was married," the official said.
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As the body was not in a decomposed state, police are assuming that she was either killed the night before or in the morning. However, the time of death will only be confirmed after postmortem, police said.
The body has been sent for post-mortem and a case of murder registered at Madhu Vihar police station in east Delhi.
A CCTV camera is installed outside the metro station facing the spot where the trunk was found and police are scanning the footage of the camera to identify the people who left the box there, police said.