Censor.NET reports citing the report of the OSCE SMM.
"On 28 April an SMM patrol consisting of six members and two armoured vehicles was positioned at an "LPR"-checkpoint near "LPR"-controlled Molodizhne speaking with an armed "LPR" member. At 12:17 p.m., the patrol members were proceeding to their vehicles to depart the area when the same "LPR" member began waving his hand at the SMM, indicating that the patrol should depart quickly. At 12:20 p.m., from inside their vehicles, the SMM heard an explosion assessed as an airburst about 50-100m north-west. At the same time, the SMM saw a cloud of black smoke rising above the mentioned location; no impact was observed from the distance. The SMM could not assess the cause of the explosion. The SMM immediately left the area and returned safely to its base in "LPR"-controlled Kadiivka," the OSCE report reads.
The same day, a separate SMM patrol consisting of five members and two armored vehicles was positioned at an observation post near "LPR"-controlled Kruta Hora. At about 10:35 a.m., while all SMM patrol members were outside of their vehicles, the patrol heard a shot of small-arms fire approximately 40-50m south. The SMM could not determine the type of weapon or the direction in which it was fired. The SMM left the area immediately and returned safely to its base in Luhansk city.
As reported, a United States national was killed in OSCE SUV blast April 23 near the village of Pryshyb in the militants-held territory of Ukraine's eastern Luhansk region. Two more monitors, nationals of Germany and the Czech Republic, were injured. The U.S. State Department said the tragedy "was inexcusable" and promised to punish the guilty.