He graduated from the Saratov Military Institute of the Interior Troops of the Ministry of Internal Affairs of the Soviet Union in 1987 and was sent to serve in Mahiliou, Belarus, then part of the USSR.

Responsible for the concealment of the election results in August 2020, who gave orders for the violent dispersal of peaceful rallies and the use of rubber bullets, firearms, flash grenades and water cannons against unarmed protesters, as well as for violence and torture in the Belarusian security forces and prisons.

[6][7] On 2 October 2020, Karayeu was banned from entering the European Union[8] and put on the Specially Designated Nationals and Blocked Persons List by the United States Department of the Treasury.

[14] On 4 March 2021 the BYPOL initiative published an audio recording of Karaev's alleged address to the staff of the Chief Organized Crime and Corruption Fighting Directorate (Russian: Главное управление по борьбе с организованной преступностью и коррупцией, GUBOPiK) in autumn 2020.

[15] In the transcript of the speech, the then Minister of Internal Affairs makes insults towards Belarusians and also instructs the employees of the GUBOPiK regarding the ways and methods of extrajudicial reprisals against people.