Most terrorist provocations involved small arms, Censor.NET reports citing the ATO press center.
The criminals also fired from mortars and armored vehicles.
The militants were most active in the vicinity of Donetsk. The terrorists mortared ATO forces' positions near Hranitne village at 7.55 p.m. and Ukrainian strongholds near the villages of Pisky and Opytne at 8.35 p.m.
Situation becomes more serious as terrorists shell Avdiivka from tank and artillery
They also shelled Ukrainian positions along the demarcation line near the towns of Avdiivka, Marinka, and Maiorsk and the village of Opytne (Donetsk region) with mortars and and rocket-propelled grenades. In addition, Ukrainian stronghold near Spartak village was shelled from an infantry fighting vehicle.
In the Luhansk region, the terrorists were most active near Sokilnyky village. They fired at the position of our troops with small arms five times and with mortars once.
In the Mariupol area no shelling was reported from 6 p.m. till midnight on April 4. At the same time, the terrorists used four UAVs to conduct aerial reconnaissance.