Bulgarian Interior Minister Rumyana Bachvarova has said migratory pressure on the country's borders is on the ebb, amid fresh official data on the number of protection seekers.

Her words come as the annual peak of migrants in August and September is followed by a drop as autumn arrives.

Bachvarova, however, has added Bulgaria is now ready to allocate emergency funding to provisional accommodation if the number of arrivals surges again.

Three vans will be used when migrant centers in Bulgaria are full and cannot take more people in, the Bulgarian National Radio reports her as saying.

Bachvarova has explained that all the effort of Bulgaria to raise EU funding for a response to the migrant crisis addresses a possible scenario of renewed migratory pressure which "hypothetically and theoretically could be determined depending on the events in Serbia."

With temporary shelters already used, a capacity of up to 6000 is available, but has been used to the maximum.

Earlier this week, an increasing number of departures from accommodation centers was reported by authorities, days after a warning from the refugee agency that it was working beyond its capacity to give shelter to asylum seekers.

Bulgaria recently saw the approval of a EUR 108 M in funding to step up border security and look after the migrants on its territory.

Belgrade has been taking steps to enforce its own border protection, amid a surge in irregular entries from Macedonia and Bulgaria and intense effort of authorities in Budapest to tighten border security. Sofia has raised concerns the situation may result in thousands of migrants being trapped on its territory.

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