Latvia’s State Security Service said today that it had detained 4 Latvian nationals on suspicion of spying for Russia’s Federal Security Service.

Three were sent to pretrial detention, while the fourth was ordered not to leave the country and to report to investigators if he decides to change permanent address.

According to the agency, the men are suspected of “carrying out activities aimed against freedom of actions, immunity, economic, social, and physical safety of other individuals”. The detentions came after investigators searched 14 sites and confiscated an unspecified number of documents and information.