Why did an Azerbaijan Airline plane crash in Kazakhstan? What we know

At least 38 people were killed after the passenger plane crashed near Aktau in Kazakhstan.

Azerbaijan is marking a day of mourning after a local airline’s passenger plane crashed off the coast of the Caspian Sea.

Authorities across Azerbaijan, Kazakhstan and Russia are investigating the emergency landing on Wednesday morning that killed at least 38 people.

Here’s what we know about the crash.

The plane crashed about 3km (1.8 miles) from the city of Aktau in Kazakhstan, on the eastern shore of the Caspian Sea.

It was en route from Azerbaijan’s capital Baku to Grozny, capital of the Chechnya region in southern Russia.