Police have said they saved 34 migrants who were trapped on the border between Greece and Turkey on Tuesday.
According to reports, the 34 people, including seven children, had been on an islet on the Evros River, which forms the frontier between the two countries.
In April, the UN Refugee Agency (UNHCR) called on the Greek government to urgently improve conditions and expand reception capacity in the north east, following the rise in arrivals in the Evros area across the land border with Turkey.
Some 2,900 people arrived in Evros that month, mainly Syrian and Iraqi families. This was equivalent to half the estimated arrivals for all of 2017.
According to figures compiled by the UNHCR, in April land arrivals outnumbered sea arrivals.