Russia’s Federal Security Service has detained an 18-year-old man in the Republic of Mari El on suspicion of treason.

The young man contacted a representative of Ukrainian intelligence online and agreed to collect information in exchange for money, ASTRA reports.

The detainee reportedly said he was initially offered assignments to set fire to military buildings and vehicles. However, he was later given intelligence-gathering tasks instead.

He filmed military facilities and buildings belonging to the republic’s prosecutor’s office. He is also accused of passing information to Ukraine about the locations of defense industry facilities and law enforcement agencies in the region.

The man has been arrested, and a criminal case on charges of treason has been opened.