Four of the bodies recovered from the crashed AirAsia plane have been so far been identified and returned to their families.

The first, Hayati Lutfiah Hamid, was identified on Thursday (1 January) and three others on Friday: flight attendant Khairunisa Haidar Fauzi and passengers Kevin Alexander Soetjipto and Grayson Herbert Linaksita.

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Members of the Indonesian Army carry the coffin of Kevin Alexander Soetjipto, who was on AirAsia flight QZ8501Oscar Siagian/Getty Images

"[Judging by] dental records and fingerprints, the team decided it is indisputable that the body is that of Grayson Herbert Linaksita," said Budiyono, head of Police Disaster Victim Identification Unit of the Surabaya police.

"We also managed to identify the body labelled 004 as that of Khairunisa Haidar Fauzi ... based on dental records and fingerprints, gender, of a birthmark in the form of a mole on the left shoulder and her uniform.

"The body labelled 006 [is] identified with the name Kevin Alexander Soetjipto based dental and fingerprint data."

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Coffins containing the remains of AirAsia QZ8501 passengers recovered from the sea are carried to a military transport plane at the airport in Pangkalan Bun before being transported to Surabaya, where the flight originatedDarren Whiteside/Reuters
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Indonesian military personnel carry the coffin of Grayson Herbert Linaksita, a passenger on AirAsia flight QZ8501Athit Perawongmetha/Reuters
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Relatives of Grayson Herbert Linaksita cry after they received his remainsOscar Siagian/Getty Images
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Indonesian police officials pray before handing over the coffin containing the remains of Khairunisa Binti Haidar Fauzi, one of the flight attendants from AirAsia flight QZ8501, to her family at the police hospital in SurabayaManan Vatsyayana/AFP

At the muddy gravesite where Hayati Lutfiah Hamid was buried, something was missing. Though around 150 villagers had gathered to lay the first identified victim of AirAsia Flight 8501 to rest, the people who would mourn her most were not there.

Her husband Djoko Suseno, nine-year-old daughter Naura Kanita Rosada Suseno, and mother-in-law Soemanik Saeran, are all still missing in the Java Sea after their plane went down Sunday (28 December), killing all 162 people on board.

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Hayati Lutfiah Hamid's grave is tended at Sawo Tratap Islamic cemetery in SurabayaRobertus Pudyanto/Getty Images
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The mother of Hayati Lutfiah Hamid, the first identified victim of AirAsia flight QZ8501, cries as her remains are handed overRobertus Pudyanto/Getty Images
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Relatives show photos of Hayati Lutfiah Hamid's mother-in-law Soemanik Saeran and her familyRobertus Pudyanto/Getty Images

Officials have said 22 bodies have now been recovered.

The Indonesian-led search for the wreck of flight QZ8501 is centred in the northern Java Sea, close to the Karimata Strait, where search teams have recovered bodies and pieces of the plane. Previous reports of a sonar image showing the plane body in the water have not been confirmed, officials said.

Rescuers hope the fuselage — if intact — will contain the remains of many of the nearly 150 passengers and crew still missing. The wreckage will be key to explaining what might have caused flight 8501 to go down.

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A map with the mark 'TKP', believed to indicate the possible location of the wreckage of AirAsia flight QZ8501, is seen onboard SAR ship Purworejo at Kumai port, Pangkalan BunBeawiharta/Reuters
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Police carry an emergency slide thought to be from the wreck of the AirAsia QZ8501 jet, at Kumai Port, Pangkalan Bun, KalimantanFanny Octavianus/Reuters
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Indonesian Air Force personnel carry debris suspected to be from the missing AirAsia flight QZ8501Darren Whiteside/Reuters
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Police carry debris believed to be an oxygen tank from the AirAsia QZ8501 jetYanuar/AFP
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Indonesian search and rescue team members arrive with newly recovered items from AirAsia flight QZ8501Adek Berry/AFP

After Friday prayers, Muslims held a special prayer session for the AirAsia victims at a mosque next to the Surabaya police hospital where bodies were being kept.

"We pray that the passengers in this AirAsia tragedy will be received by Allah and that all their sins will be forgiven by Allah," the imam said.

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Muslims perform Friday prayers, including a special prayer for the passengers of AirAsia flight QZ8501, at Masjid Al-Akbar in SurabayaAthit Perawongmetha/Reuters
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Muslims pray for the victims of the AirAsia flight QZ8501 crash at the Al-Akbar National Mosque in SurabayaOscar Siagian/Getty Images
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An Indonesian Muslim offers prayers for the victims of AirAsia flight QZ8501, at the Al-Akbar National Mosque in SurabayaManan Vatsyayana/AFP
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Surabaya residents pray for victims of the AirAsia flight QZ8501 crashOscar Siagian/Getty Images

The Airbus A320 smashed into the Java Sea on Sunday, halfway into a flight from Surabaya, Indonesia's second-largest city, to Singapore. Minutes earlier, the pilot told air-traffic control he was approaching threatening clouds, but was denied permission to climb to a higher altitude because of heavy air traffic.