JNU student Najeeb Ahmed has been missing since October 15.
Delhi Police Commissioner Alok Kumar Verma on Friday doubled to Rs 2 lakh the award money for information about a JNU student who went missing three weeks ago.
"This order will come into force with immediate effect and shall remain good till the case is worked out or the missing person is traced," a Delhi Police statement said.
The statement also said that "all out efforts were made to trace the missing JNU student (Najeeb Ahmed) but no clue has been surfaced yet.
"As and when any information about the accused person involved in the above enumerated case or the missing person is received, it should be sent immediately to the Vasant Kunj police station," it said.
Najeeb Ahmed, a 1st year MSc Biotechonoloy student, went missing from the Jawaharlal Nehru University campus on October 15 after a tiff with alleged members of the Akhil Bharatiya Vidyarthi Parishad (ABVP).
The ABVP has denied any involvement in his disappearance.
Police also said that they had posted over 20,000 posters in Delhi and outside regarding Najeeb Ahmed and that a SIT formed for the purpose had checked with over 300 auto-rickshaws plying in the area.
Police teams have also visited Ajmer, Kota, Rae Bareli, Roorkee, Faizabad, Azamgarh and Badaun in search of Ahmed, it said. Ahmed stayed in room in JNU's Mahi Hostel and hailed from Badayun in Uttar Pradesh.
The police statement came shortly after Lt. Governor Najeeb Jung met Special Commissioner P Kamraj, Joint Commissioner of Police RP Upadhyay and Special Investigation Team head Manishi Chandra at his office.
Earlier, LG Jung's office also said that the reward money was being raised to 2 lakh.
LG Jung's meeting came a day after Delhi Chief Minister Arvind Kejriwal visited the JNU campus and urged the students to take their protests to the India Gate complex in the city's heart.