LONDON (AP) — Two Russian journalists were arrested by their government on “extremism” charges and ordered by courts there on Saturday to remain in custody pending investigation and trial on accusations of working for a group founded by the late Russian opposition politician Alexei Navalny.

Konstantin Gabov and Sergey Karelin both denied the charges for which they will be detained for a minimum of two months before any trials begin. Each faces a minimum of two years in prison and a maximum of six years for alleged “participation in an extremist organization,” according to Russian courts.

They are just the latest journalists arrested amid a Russian government crackdown on dissent and independent media that intensified after its full-scale invasion of Ukraine more than two years ago. The Russian government passed laws criminalizing what it deems false information about the military, or statements seen as discrediting the military, effectively outlawing any criticism of the war in Ukraine or speech that deviates from the official narrative.