An unidentified man, who worked with Cincy Sebastian and allegedly wanted to marry her, has come under the police scanner in the murder case.
The police have also detained a suspect hailing from Kerala, who had visited the PG after the incident.
The suitor was allegedly troubling Sebastian as she had turned down his proposal saying her father would take marriage-related decisions for her.
The victim's father reached Gurgaon on Thursday.
He would take the body to Kerala on Friday.
The victim's mother did not accompany him as she was currently under a state of shock.
Meanwhile, the Gurgaon police also questioned two girls who stayed in Sebastian's PG. While one works with WNS, the other is employed with a private IT company in Gurgaon.
Sebastian, who was found dead in her DLF Phase 3 paying guest accommodation on Wednesday morning, was first gagged and mercilessly stabbed several times, the autopsy report has revealed.
Dr Hazari Lal, who conducted the postmortem at AIIMS on Thursday, said, “The girl was stabbed with force as suggested by three major wounds.
The assailant attacked her neck first, while the second stab damaged her lungs and spinal cord. As the clothes were intact, it shows that there was no struggle.” Cincy’s neighbours said they heard her screaming but did not react, said police officials.
Sources said Sebastian was quite active on Facebook and her cousin, the daughter of aunt Ambija staying closeby, was supposed to get married on January 19.
Meanwhile, the police produced the would be son-in-law of aunt Ambija, her driver and son before the shopkeeper, who had sold the knife to the killer.
The shopkeeper had given a clean chit to all saying the the suspect was not amongst them.
Cops to release killer’s sketch soon
The city police will soon release a sketch of the suspect in connection with the killing of 23-year-old software engineer Cincy Sebastian. The sketch will be prepared based on the description given by the shopkeeper, who sold the kitchen knife used in the crime to the suspect.
Sebastian was found stabbed to death in a DLF City Phase 3 flat on Wednesday morning.
The shopkeeper, who runs a shop in Nathupur village, told the police that the suspect bought the knife from him for R50. He also said the suspect was a well-dressed man and spoke fluent English.
“While purchasing the knife, the suspect also called up someone. The man seemed to be in a hurry and didn’t spend much time at the shop," the shopkeeper told the police.
"The way the killer gained entry into the victim's first-floor house without any sign of struggle proves that he was known to Sebastian. The killer entered the house the moment the landlady left for work. The murder was well-planned,” the police said.
The crime scene suggests that Sebastian had opened the door for the killer. He attacked her from behind.