The National Anti-Corruption Bureau detained the director of the state-owned company Lviv Armour Plant, Roman Tymkiv, and his deputy Oleh Tkachenko, press secretary Iryna Mykoltsiv told Zaxid.net on Friday, 14 July.
She said she did not know the reasons for detention.
The detainees were taken to the NABU territorial office in Lviv.
LBTZ is engaged in major repairs of tanks, tank tractors, and engineering machines. They also manufacture armoured cars Dozor-B.
The detention happened on the day when President Petro Poroshenko was planned to visit the company.
Tymkiv was appointed in September 2015 after his predecessor was dismissed for disrupting plans for the production of military equipment for the ATO.