Deputy prime minster says investigators are looking at a device found near the blast site

Similarly, Czechs also took to the streets to use the anniversary of the 1989 events to protest against controversial populist billionaire Andrej Babiš,who is expected to lead the next government after last month’s parliamentary elections.

Large crowds flooded Prague’s historic Old Town Square at a rally called “Czechia is not for sale”, carrying banners criticising Babiš and chanting “Throw away Babiš”, an AFP journalist observed.