An explosion at a construction site in the southern Russian city of Voronezh on Thursday was reportedly caused by an irate worker seeking revenge against his boss with the help of a grenade.
The blast occurred early Thursday morning, killing the 48-year-old construction worker and seriously injuring his boss, local media reported.
The businessman, who survived the blast, told police upon regaining consciousness that the construction worker had demanded an advance payment for his work. Upon being told he would be paid upon completion of the work, he took a grenade out of his pocket and pulled out the pin, local online news portal MoyoOnline.ru reported Thursday.
Earlier reports said a drunken construction worker had accidentally blown himself up.
A criminal case has been opened into the incident, and the businessman injured in the blast has been hospitalized, Rossiiskaya Gazeta reported.