"A Sukhoi-27 plane crashed at around 5 p.m. local time during a training flight", the Armed Forces General Staff said in a statement on October 16, adding that "the bodies of the two pilots have been found".
A Ukrainian Su-27UB twin-seat combat trainer / fighter jet with two pilots crashed during a training exercise on Tuesday.
The crash occurred in the Vinnytsia region, around 180 kilometers (110 miles) southwest of Kiev.
The Ukrainian Defense Ministry confirmed in a statement that an SU-27 fighter jet had crashed Tuesday afternoon "in the area of Ulanov, between the settlements of Berdychiv and Khmilnyk".
The crash took place during joint military training between the USA military and Ukrainian counterparts, known as Clear Sky 2018.
The Ukrainian general staff earlier said the pilot and co-pilot died, without giving their nationalities.
Senyk could not confirm the information about one of the pilots being the US citizen.
According to the Ukrainian Military Portal, the accident took place during the multinational military exercise titled "Clear Sky-2018".
About 950 servicemembers from nine militaries are taking part in the exercise, including the United States, United Kingdom, Ukraine, Belgium, Denmark, Estonia, the Netherlands, Poland and Romania.
Later, U.S. Air Forces in Europe (USAFE)has confirmedthat a U.S. service member was involved in the incident, but has no made an official announcement as to their status.
We will continue to update this story as more information becomes available.