More than 30 killed after Russia-bound Azerbaijan Airlines plane ...

An Azerbaijani airliner with 67 people onboard crashed Wednesday near the Kazakhstani city of Aktau, killing 38 people and leaving 29 survivors, a Kazakh official said.

Deputy Prime Minister Kanat Bozumbaev disclosed the figures while meeting with Azerbaijani officials, the Russian news agency Interfax reported.

The Embraer 190 was en route from the Azerbaijani capital of Baku to the Russian city of Grozny in the North Caucasus when it was diverted and attempted an emergency landing three kilometres from Aktau, Azerbaijan Airlines said.

Speaking at a news conference, Azerbaijani President Ilham Aliyev said it was too soon to speculate on the reasons behind the crash, but said that the weather had forced the plane to change from its planned course.

"The information provided to me is that the plane changed its course between Baku and Grozny due to worsening weather conditions and headed to Aktau airport, where it crashed upon landing," he said.

Russia's civil aviation authority, Rosaviatsia, said that preliminary information showed that the pilots diverted to Aktau after a bird strike led to an emergency on board.

According to Kazakh officials, those aboard the plane included 42 Azerbaijani citizens, 16 Russian nationals, six Kazakhs and three Kyrgyzstan nationals. Azerbaijan's prosecutor general's office previously said that 32 of the 67 people on board had survived the crash, but told journalists that the number wasn't final.

The Associated Press could not immediately reconcile the difference between the numbers of survivors given by Kazakhstan and Azerbaijani officials.

Kazakhstan's main transport prosecutor, Timur Suleimenov, told a briefing in the country's capital Astana that the plane's black box, which contains flight data to help determine the cause of a crash, had been found, Russian news agency Interfax reported.

Mobile phone footage circulating online appeared to show the aircraft making a steep descent before smashing into the ground in a fireball. Other footage showed part of its fuselage ripped away from the wings, with the rest of the aircraft upside down in the grass. The footage corresponded to the plane's colours and its registration number.

Some of the videos posted on social media showed survivors dragging fellow passengers away from the wreckage.

Flight-tracking data from FlightRadar24.com showed the aircraft making what appeared to be a figure eight once nearing the airport in Aktau, its altitude moving up and down substantially over the last minutes of the flight before it hit the ground.

FlightRadar24 separately said in an online post that the aircraft had faced "strong GPS jamming," which "made the aircraft transmit bad ADS-B data," referring to the information that allows flight-tracking websites to follow planes in flight. Russia has been blamed in the past for jamming GPS transmissions in the wider region.

Azerbaijan Airlines said it would keep members of the public updated and changed its social media banners to solid black. It also said that it would suspend flights between Baku and Grozny, as well as between Baku and the city of Makhachkala in Russia's North Caucasus, until its investigation into the crash has been concluded.

Azerbaijan's state news agency, Azertac, said that an official delegation of Azerbaijan's emergency situations minister, the deputy general prosecutor and the vice-president of Azerbaijan Airlines were sent to Aktau to conduct an "on-site investigation."

Aliyev, who was travelling to Russia, returned to Azerbaijan on hearing news of the crash, the president's media service said. He was due to attend an informal meeting of leaders of the Commonwealth of Independent States (CIS), a bloc of former Soviet countries founded after the collapse of the Soviet Union, in St. Petersburg.

Aliyev posted a statement on social media, saying, "It is with deep sadness that I express my condolences to the families of the victims and wish a speedy recovery to those injured." 

He also signed a decree declaring Dec. 26 a day of mourning in Azerbaijan.

Russian President Vladimir Putin spoke to Aliyev on the phone and expressed his condolences, Kremlin spokesperson Dmitry Peskov told reporters.

Speaking at the CIS meeting in St. Petersburg, Putin also said that Russia's Emergency Ministry sent a plane with equipment and medical workers to Kazakhstan to assist with the aftermath of the crash.

Kazakhstani, Azerbaijani and Russian authorities said they were investigating the crash. Embraer told The Associated Press in a statement that the company is "ready to assist all relevant authorities."