The Polish authorities have been searching for bodies in wetlands at the Polish-Belarus border after at least three bodies of migrants were found in the last ten days. There are fears that the death toll could rise.
An Afghan man who entered Latvia via a hole in the border fence with Belarus has died of hypothermia. He is said to have been smuggled across the border along with another Afghan man.
People fleeing the Middle East are taking a new route to reach Europe via the small Russian enclave of Kaliningrad, according to research by German journalists. Armed with visas from Moscow, the migrants are putting their lives at risk to make the difficult journey.
After Lithuania built a fence on its border with Belarus, the numbers of migrants crossing the border into the country, and therefore the EU, have reduced, say the authorities.
Warsaw is working on "sealing" the border amid fears that Moscow is using it as a conduit for illegal migration. Poland recently completed a similar barrier along its border with Belarus after a standoff over migrants.