An Aeroflot SSJ 100 plane en route from Riga to Moscow has returned to the airport of departure due to depressurisation, according to Latvian aviation authorities.

"The plane has just landed. Depressurisation", Maris Gorodtsov, head of the Latvian civil aviation administration, said.

According to Gorodtsov, "the crew reported problems, in such cases there is a request to the nearest airport, the airport of the intended landing".

"All services were ready to receive the flight", he added.

The number of passengers on board is still unknown, as is whether there are any injured among them.