It has been a month since first year MSc student of Biotechnology, Najeeb Ahmed, went missing from the Jawaharlal Nehru University's (JNU) Mahi-Mandvi hostel after an alleged scuffle with ABVP students.
Senior Congress leader Ghulam Nabi Azad said on Tuesday that the issue will be raised in Parliament.
Nothing was known about Najeeb's whereabouts even as 350 of his fellow JNU students marched along with his mother in protest against the university's advice.
There have been several versions of what had happened the night that Najeeb went missing, the police has so far been unable to trace him.
Here's what we know so far:
On the night of 15 October, Najeeb, who had just moved into room number 106 of his hostel had reportedly slapped a student after which he was asked to vacate the hostel. The Indian Express had quoted a fellow activist as saying, "It all started with a scuffle between two groups of students, but then an entire group of ABVP activists came to avenge it and beat him up."
Najeeb had allegedly called his mother the night the scuffle broke out. His mother Fatima Nafees told The Indian Express, "He said nothing except that 'Mere saath koi haadsa ho gaya hai, aap aa jaiye (There has been an incident, please come)'. I told him I would leave as soon as possible, but would not make it to Delhi before noon the next day. I called his roommate Qasim, who said it was just a small incident and everything was under control."
A complaint was registered in the Vasant Kunj North police station under section 365 (kidnapping with intent secretly and wrongfully to confine person).
In response to the news Najeeb having gone missing, JNU in a statement had called him the "accused" prompting the NUSU to call for a "complete shut down".
The students had accused the university authorities for not taking up the matter seriously.
By the fourth day the university administration, according to a report in The Times of India, had approached the government to rope in central agencies including the National Crime Record Bureau and the CBI in the investigation.
The report had quoted a statement from the university as saying, "Delhi police have been approached to investigate the matter and the administration is regularly in communication with the police. Police has informed that they have already registered a case under Section 365 of the IPC and doing the investigations. All PCR vans in Delhi and all SSPs throughout India have been alerted and efforts are being made to trace the student. Further, the police has intimated all the six neighbouring states and put the information on Zip-net in Northern Zone. Moreover, all relevant central agencies, including NCRB and missing section of CBI, have been requested for help."
Protests had intensified as the police also failed to trace Najeeb. Agitating students had on 20 October confined the vice chancellor M Jagadesh Kumar and about 12 other officials in the university's administrative building.
While Kumar had assured the students that all efforts were being made to find Najeeb, he had criticised the student for their "illegal" activities, PTI had reported.
On 21 October Home Minister Rajnath Singh had said he would set up a special team to find Najeeb.
Earlier this month, with no sign of hope, when Najeeb's mother Nafees had participated in a protest, she was dragged into a bus by police along with other students when they were on their way to India Gate. The Delhi police had been harshly criticised for this.
As days passed the Delhi police has come up with several theories about Najeeb despite the fact that the student still remained missing. Last week the police said that they had found evidence of Najeeb being mentally disturbed.
Investigators had reportedly accessed prescriptions from the doctors Najeeb had allegedly visited and found that he was on anti-depressants, and other medicines for insomnia and obsessive compulsive disorder. The police also claimed that because of his mental condition, Ahmed may have left the campus voluntarily. This was after Najeeb's family moved the Delhi Hight Court seeking information on the police probe.
The investigators had also claimed that Najeeb was hiding under a new identity, and this was a result of his alleged mental illness.
And as allegations and theories fly thick and fast, the police is yet to figure out where Najeeb is.