The European Union’s border agency said Thursday that it will send dozens of officers and equipment as reinforcements to Finland to help police its borders amid suspicion that Russia is behind an influx of migrants arriving to the country.

Frontex said that it expects a “significant reinforcement” made up of 50 border guard officers and other staff, along with patrol cars and additional equipment, to be put in place as soon as next week.

More than 800 migrants without proper visas and documentation have arrived in Finland so far since August, with more than 700 in November alone by the end of Wednesday — compared to a few dozen in September and October. They include people from Afghanistan, Iraq, Syria, Yemen, Kenya, Morocco and Somalia.