The fall of an S-300 missile was registered in a period between 10:00 and 11:00 local time (07:00 and 08:00 GMT), the media wrote on its Telegram-channel.
Belarusian President Alexander Lukashenko has immediately been informed of the incident and has ordered to identify its causes, the media added.
There are two working versions at the moment, according to Belta. The missile either entered the Belarusian territory by mistake, as it recently happened in Poland, or was shot down by the Belarusian air defense forces.
There is no information about causalities yet, the news agency said.