Malawians have taken to the streets in all cities and major towns to protest against the manner in which last May’s elections were conducted.
Nearly two months since the elections were held, political tension remains high as election results are being challenged in court by the opposition.
The largest crowd was in the capital, Lilongwe, where the protest was largely peaceful, though some main roads in the city were blocked by burning tyres and rocks placed by demonstrators.
A few privately owned vehicles have also been stoned.
More violent scenes were reported elsewhere.
In the southern city of Blantyre, soldiers from the Malawi Defence Force were called in to apprehend suspected governing Democratic Progressive Party (DPP) supporters who were reportedly terrorising protesters.
Shops have also been vandalised in isolated incidents in the north, while masked youths are also said to have mounted makeshift roadblocks on some major roads, where they were not permitting vehicles to pass without giving some money.
The Constitutional Court will start to hear the case challenging the re-election of President Peter Mutharika on 29 July.