Video shows cars driving past a fire at a crossroads.
The flames seem to come out of a manhole cover.
It was not immediately clear whether the embassy had been evacuated.
Last October, amid growing tensions between the West and the Belarusian government of Alexander Lukashenko, Poland was ordered to drastically reduce its diplomatic staff in Minsk.
The Belarusian Foreign Ministry accused Poland and Lithuania, both EU members, of engaging in “destructive activities”.
Poland has been ordered to reduce its diplomatic corps from 50 to 18.
READ MORE: NATO ‘must unite against threat from the East’ after Belarus
Thousands of anti-government protesters were arrested last summer as mass rallies took place following the elections.
President Lukashenko has ruled this Eastern European country for over 26 years with an iron fist.
His ability to stay in power despite growing opposition has been attributed in part to his support from Russian President Vladimir Putin.
But the EU said the election was “neither free nor fair”.
This week, Ms Tsikhanouskaya urged Boris Johnson’s government to use its ‘power’ as a nation to tighten the sanctions imposed on the Belarusian president and his regime amid continuing concerns about human rights abuses taking place in the country. country.
She addressed the Foreign Affairs Committee yesterday afternoon as part of a unique evidence-gathering session on the current crisis.
Two other panels of expert witnesses were invited to speak alongside Ms Tsikhanouskaya on what can be done to arrest authoritarian President Alexander Lukashenko and his Russian backers and to help create a democratic state.
The committee’s findings will be used to make recommendations to the Foreign, Commonwealth & Development Office (FCDO).