ALMATY, Kazakhstan (AP) — A jetliner with 98 people aboard struggled to get airborne and crashed shortly after takeoff Friday in Kazakhstan, killing at least 12 people, authorities said.

The Bek Air aircraft, identified as a 23-year-old Fokker 100, hit a concrete wall and a two-story building soon after departing from Almaty, Kazakhstan’s largest city and former capital, airport officials said.

The jet’s tail also struck the runway twice during takeoff, indicating that it struggled to get off the ground, Deputy Prime Minister Roman Sklyar said.

Fifty-four people people were reported hospitalized with injuries, at least 10 of them in critical condition, officials said.

The cause of the predawn crash was unclear. Authorities quickly suspended all Bek Air and Fokker 100 flights in Kazakhstan pending the investigation.

One survivor said the plane started shaking less than two minutes after takeoff. 

“At first, the left wing jolted really hard, then the right. The plane continued to gain altitude, shaking quite severely, and then went down,” Aslan Nazaraliyev told The Associated Press by phone.

Government officials said the jet underwent de-icing before the flight, but Nazaraliyev recalled that its wings were covered in ice, and passengers who used emergency exits over the wings slipped and fell.

The weather in Almaty was clear, with temperatures just below freezing. The plane was flying to Nur-Sultan, the capital formerly known as Astana.

Local authorities initially put the death toll at 15, but the interior ministry later revised the figure downward.

Officials in the Almaty branch of the health ministry could not explain why the figure was revised. They attributed the confusion to “agitation” at the site of the crash.

In a statement on its Facebook page, the airport said there was no fire, and a rescue operation began immediately.

Around 1,000 people were working at the snow-covered crash site. Video footage showed the front of the broken-up fuselage rammed against a building and the rear of the plane lying in a field next to the airport.

In Almaty, dozens of people lined up at a local blood bank to donate for the injured.

The government promised to pay families of the victims around $10,000 each.

The Fokker 100 is a mid-sized, twin-engine jet. The company that manufactured it went bankrupt in 1996, and production stopped the following year.

Kazakh President Kassym-Jomart Tokayev ordered an inspection of all airlines and aviation infrastructure in the country. Eighteen passenger airlines and four cargo carriers are currently registered in Kazakhstan.

Kazakhstan’s air-safety record is far from spotless. In 2009, all Kazakh airlines — with the exception of the flagship carrier Air Astana — were banned from operating in the European Union because they did not meet international safety standards. The ban was lifted in 2016.