According to Station House Officer (SHO) Qasim, a police officer involved in the investigation, investigators are looking at whether her death was due to the gunshot wound, or if strangulation was involved as well.
Ms Zulfiqar arrived in Pakistan two months ago for a wedding and was staying at a rented home with a friend.
A 25-year-old British-Pakistani woman was found dead under mysterious circumstances at her friend's house in Lahore's DHA Phase 5, the police confirmed Tuesday. The police were trying to convince her parents to make any close relative living in Lahore the complainant of the case.
A police report said Ms Zulfiqar's uncle, Mohammad Nazeer, found her body after receiving a phone call from her father in London to say she had been killed.
Police said they had not yet made any arrests and her parents are understood to be flying to Pakistan.
She was a law student at Middlesex University and had gone on to work as a paralegal.
Pakistan's English-language newspaper Dawn reported that Ms Zulfiqar had bullet wounds and signs of torture on her body.
A case has been registered against four persons, including two men identified as the victim's friends, Zahir Jadoon and Saad Amir Butt, Geo News reported.
Mahira Zulfiqar, 26, was found in a pool of blood in her flat on Monday. A mobile phone was found near her body.
"We have seized the mobile phone for forensic analysis", the SP said, adding the police teams were also trying to reach the nearby CCTV cameras to check the movement of any suspect.
Ms Zulfiqar is understood to have moved to Pakistan from the United Kingdom, where she had been working as a paralegal at Duncan Blackett, according to her LinkedIn profile.
The law graduate from London had been threatened by two men who both wanted to marry her, according to legal documents seen by the BBC.