Russian Deputy Defense Minister Timur Ivanov was detained on Tuesday for taking "large-scale" bribes.
Ivanov, who has been in his position for eight years and is in charge of military construction, is one of the highest-profile corruption cases since Russia's war in Ukraine.
The Investigative Committee, Russia's top investigative body, made a brief statement announcing Ivanov's arrest and the ongoing investigation.
The statute cited for Ivanov's detainment is for accepting bribes on a particularly large scale.
In 2022, Russia's Anti-Corruption Foundation, led by the late Russian opposition leader
Alexei Navalny, accused an official named Ivanov of living extravagantly, with expenses on real estate, luxurious trips, and designer goods.
Ivanov reportedly oversaw large construction projects in Mariupol, a city in eastern Ukraine that was heavily bombed and taken by Russia during its invasion.
Russian news agencies reported that Ivanov had been detained, and Kremlin spokesperson Dmitry Peskov confirmed that a report on his detention had been presented to President Vladimir Putin.
Defense Minister Sergei Shoigu was informed in advance of Ivanov's detention.
On Wednesday, the Russian newspaper Izvestia reported that searches were conducted at some properties belonging to Dmitry Ivanov, a wealthy Russian businessman and expert in cybernetics and the nuclear industry.
Ivanov could face up to 15 years in prison if convicted.
Forbes magazine had previously listed him as one of the wealthiest men in Russia's security structures.
A picture of Ivanov was published earlier that day, showing him attending a meeting of ministerial officials chaired by Shoigu.