![A worker lowers the Russian national flag to half-mast on a roof of the city administration building, as the country observes a day of mourning for victims of the Tu-154 plane which crashed into the Black Sea on its way to Syria on Sunday, in Krasnoyarsk A worker lowers the Russian national flag to half-mast on a roof of the city administration building, as the country observes a day of mourning for victims of the Tu-154 plane which crashed into the Black Sea on its way to Syria on Sunday, in Krasnoyarsk, Russia, December 26, 2016. REUTERS/Ilya Naymushin](https://www.netnewsledger.com/wp-content/uploads/2016/12/Russia-2016-12-26T081200Z_1_LYNXMPECBP07E_RTROPTP_3_RUSSIA-AIRPLANE.jpg)
![A worker lowers the Russian national flag to half-mast on a roof of the city administration building, as the country observes a day of mourning for victims of the Tu-154 plane which crashed into the Black Sea on its way to Syria on Sunday, in Krasnoyarsk, Russia, December 26, 2016. REUTERS/Ilya Naymushin](https://www.netnewsledger.com/wp-content/uploads/2016/12/Russia-2016-12-26T081200Z_1_LYNXMPECBP07E_RTROPTP_3_RUSSIA-AIRPLANE.jpg)
MOSCOW (Reuters) – Russia held a national day of mourning on Monday, a day after a Syria-bound military plane crashed into the Black Sea killing all 92 people on board, and expanded a search operation to try to recover passengers’ bodies and the jet’s black box.
The plane, a Russian Defence Ministry TU-154, was carrying dozens of Red Army Choir singers, dancers and orchestra members to Syria where they were meant to entertain Russian troops in the run-up to the New Year.
Nine Russian reporters were also on board as well as military servicemen and Elizaveta Glinka, a prominent member of President Vladimir Putin’s advisory human rights council.
Flags were flown at half-mast on Monday, mourners placed flowers at the airport in Sochi, southern Russia, where the plane took off from, and in front of the Moscow headquarters of the Russian Army’s Alexandrov song and dance troupe.
![A woman lays flowers in memory of passengers and crew members of Russian military Tu-154 plane, which crashed into the Black Sea, at the Russian embassy in Minsk, Belarus December 25, 2016. REUTERS/Vasily Fedosenko](https://www.netnewsledger.com/wp-content/uploads/2016/12/Russia-2016-12-26T081200Z_1_LYNXMPECBP07G_RTROPTP_3_RUSSIA-AIRPLANE.jpg)
Russian Transport Minister Maxim Sokolov told reporters on Monday that pilot error or a technical fault were the most likely explanations for the tragedy.
“The main versions (for the crash) do not include the idea of a terrorist act,” Sokolov told a news conference in Sochi, the RIA news agency reported.
“So we are working on the assumption that the reasons for the catastrophe could have been technical or a pilot error.”
The jet, a Soviet-era Tupolev plane built in 1983, had been carrying 84 passengers and eight crew members.
Major-General Igor Konashenkov, a Defence Ministry spokesman, said on Monday that 11 bodies had been recovered so far and that a huge sea and air search operation involving around 3,500 people was being expanded.
Thirty nine ships, five helicopters, a drone, and more than 100 divers were involved, he said, and soldiers were scouring the Black Sea coastline as well.
(Reporting by Andrew Osborn; Editing by Andrey Ostroukh)