The brother of the college student found dead in a Gulshan flat filed a murder case against Nazmul Karim Chowdhury Sharun, son of Awami League lawmaker and parliament whip Shamsul Haque Chowdhury, with a Dhaka court yesterday.

This development comes less than a week after the victim's sister sued Bashundhara Group Managing Director Sayem Sobhan Anvir over abetting the college student's suicide.

The college student was found hanging from a ceiling fan in a rented Gulshan flat on April 26, and her sister lodged the case with Gulshan Police Station the following day.

Yesterday, after recording the statement of the complainant, Metropolitan Magistrate Morshed Al Mamun Bhuiyan, ordered that all proceedings of the murder case be stayed until the probe report over abetting suicide is finalised.

According to the case filed by the victim's sister last Tuesday, the 42-year-old Anvir and the victim, who was 21 at the time of her death, were in a romantic relationship.

In the case filed yesterday, the victim's brother said Sharun used his sister to learn Anvir's business and personal secrets.

After a point, the victim, realising that Sharun was using her, stopped helping the accused.

That angered Sharun and so he sought revenge, the case statement said.

After entering her flat in Gulshan on April 26, Sharun brutally killed the victim with his associates and hung the body from a ceiling fan, the case statement added.

Ayub Ali, security guard of the flat, earlier told The Daily Star that none other than Anvir, the victim's sister and brother-in-law and one of her female friends used to visit the flat.

The victim's brother also mentioned in the case that his sister was just friends with Anvir, who had business enmity with Sharun.

Police investigators, however, said in the six diaries the police had seized from the flat, the victim had written about her extreme emotional distress and frustration because Anvir's family had become a barrier in their relationship.

According to the case statement, the victim was acquainted with Sharun and talked with him and met him at different times.

Asked about the case filed by her brother, the victim's sister -- who filed the case against Anvir over abetting suicide -- said it is common knowledge that there is a conflict between her elder brother and the two sisters over ancestral land.

"We have already filed a case against my brother," she said told journalists.

Both sisters filed a case with a Cumilla court against their brother a couple of years ago over ancestral land, local sources said.

The sisters had no connection with the brother for the last three to four years, they added.

They also said the victim's body was not even taken to her ancestral home where the brother lives.

Talking to The Daily Star, Sharun Chowdhury on Wednesday said, "Anvir has personal enmity with me and Bashundhara Group is trying to divert the issue."

He made the remark when asked about a screenshot of his Facebook messenger conversation with the victim which spread on social media. He said the screenshot was fake.

GD OVER THREATS

Meanwhile, the victim's sister filed a general diary with Cumilla Kotwali Police Station on Saturday after she received threats from various mobile numbers.

According to the general diary, after filing the case against Anvir over abetting suicide, some people in favour of the accused put pressure on the victim's sister and her family to withdraw the case or reach a settlement over the matter.

When she did not succumb to the pressure, some unknown persons called her several times from various mobile numbers from April 28 till the early hours of May 1 and threatened to kill the family members if they did not withdraw the case.

"I along with other family members have been living in utter insecurity. We fear that our lives and properties may be harmed," read the GD.

Anwarul Haque, officer-in-charge of the police station, told our Cumilla correspondent that they will investigate the matter and take security measures if necessary.

Meanwhile, protests continued demanding the immediate arrest of Bashundhara Group MD Sayem Sobhan Anvir and ensuring justice for the victim.

Cumilla City Lawyers Council and Cumilla Muktijoddha Sangsad formed separate human chains in the town, demanding exemplary punishment of the Bashundhara Group MD.