As specified, Janusz N. was detained on May 31.
The prosecutor of the Mazovian Interdistrict Department for Organized Crime and Corruption in Warsaw charged the detainee with espionage.
The court decided to arrest the man.
The agency notes that he was searched, more than 300 thousand zlotys and electronic media were seized.
In May, it became known that a 43-year-old Polish citizen was detained in Poland on suspicion of cooperation with the Russian special services.
He was assigned a three-month administrative arrest.