New Delhi, May 17: The CBI, which is probing the IC-814 hijacking case of Indian Airlines to Kandahar in December last, has approached Interpol for issuance of a "Red Corner" notice against five hijackers and two of their accomplices.Agency sources said the CBI, after obtaining warrants against seven people from a designated court in Patiala, have approached Interpol for issuance of the "Red Corner" notice against them.The persons are five hijackers Ibrahim Athar, Sunny Ahmed Aqzi, Zahoor Ibrahim, Shahid Akhter Sayed and Shakir and their two accomplices Yusuf Azhar and Abdul Rauf, the sources said.Yususf Azhar and Abdul Rauf are believed to be key conspirators behind 19 from Kathamandu on Christmas eve to Kandahar in Southern Afghanistan.The agency sources said all the seven people are believed to be in Pakistan and the CBI would ask Interpol to seek their extradition from that country. Pakistan is a signatory to Interpol.Besides this, Pakistan is under obligation to extradite the hijackers under the Hague Convention on Hijacking and the treaties signed under the SAARC aegis, the sources said.The CBI had secured warrants against the seven from the sessions court in Patiala on May 12, the sources said.The agency in its applications has named Pakistan as the country where all the seven accused are believed to be living.While Athar is said to be a resident of Bhawalpur, other four hijakcers and two accomplices are stated to be residents of port city of Karachi, the sources said.The two accomplices - Abdul Rauf and Yusuf Azhar - are brother and brother-in-law respectively of Maulana Masood Azhar, one of the three released militants in exchange for the hostages, the sources said.Meanwhile, in a related development a city court in Patiala today extended judicial remand of three alleged conspirators in the hijacking of Indian Airlines plane to Kandahar till May 30.The three - Abdul Latif alias Patel, Bhupalmar Damai alias Nepali and Dalip Kumar - were produced before the session and district Judge K S Grewal yesterday amidst tight security, and the judge conducted the proceedings in-camera.Besides these three, West Bengal police had arrested other persons, believed to be Bangladeshis, from 24-Parangas district last month.While Latif and Nepali are alleged by the agency of having provided logistical help to the hijackers and helped them in procuring Indian passports, Bhujel has been alleged to have helped the hijackers in procuring arms used for hijacking. The role of the fourth arrested, Belal, was being ascertained.The Special CBI team, probing the recent hijacking of an Indian Airlines plane, is also likely to visit Kathmandu and Dubai soon in search of evidence on Pakistan's suspected role in the eight-day long ordeal.Agency sources said the team, headed by CBI's Joint Director (Special Crime) M L Sharma, is also expected to send senior officials to Amritsar where the IC-814 was first taken after it was hijacked by suspected Harkat-Ul-Ansar (HAU) militants on December 24.The focus of the investigation would be to obtain "clinching evidence" of Pakistan's role in the hijacking.The agency had also summoned police officials from Amritsar, where the plane had first landed on December 24 after being hijacked, and obtained necessary documents and information, the sources said.The government has already moved the Nepalese authorities to facilitate interrogation of the concerned officials in Kathmandu, the sources said.The probe is being done in coordination with other agencies like Intelligence Bureau (IB), Research and Analysis Wing (RAW), National Secuity Guard (NSG) and Civil Aviation Ministry, the sources added.