Latvia´s state security service has started criminal proceedings against an European Parliament lawmaker and a citizen of the Baltic country who is suspected of cooperating with Russian intelligence and security services, according to Latvian media reports Saturday.

Latvian media outlets reported that the security service, known by the abbreviation VDD, has been investigating the activities of Tatjana Ždanoka, 73, and her alleged Russia ties over the past several weeks since reports were published in January by Russian, Nordic and Baltic news sites saying that she has been an agent for the Russian Federal Security Service, or FSB, since at least 2004.

According to news agency LETA, the Latvian security service decided to start a criminal process against Ždanoka on Feb. 22. The security service couldn’t immediately be reached for comment. Ždanoka has denied all the allegations against her.