New heavy snowfall has disrupted traffic across Bulgaria, with the country's north-west and south most severely affected.
Greece has halted trucks entering via two border crossings from going on in direction to several key cities over severe weather conditions.
A warning has been issued by Bulgaria's weather service for Thursday.
The move to expel Gülen supporter Abdullah Buyuk to Turkey "bears all the hallmarks of an unlawful rendition to risk of torture", human rights organization Amnesty International says in a report.
Bulgaria's weather service has issued a Code Yellow warning for most of the country's 28 regions.
The number of migrants seeking protection from Bulgaria dipped to 815 people in December of last year, nearly half the figure of the previous month, recent data shows.
There will be intermittent snowfall and rainfall over Bulgaria over the course of a week, the head of the country's weather service has said.
The northeastern Bulgarian regions of Dobrich, Varna and Silistra have been blocked by heavy snowfall, public radion BNR reports.
The History Museum in Silistra has received as a donation nearly 600 antique coins and other cultural valuables confiscated by the state during legal proceedings at the Silistra District Court.
Movement has been brought to a halt along Trakia motorway between Zimnitsa transportation hub and the Black Sea city of Burgas, officials say.
Twenty years have passed since the events of 1997, when on January 10 anti-government demonstrations in Bulgaria grew into a raid of the Parliament headquarters, pushing the socialist cabinet to step down.
A Code Orange warning is in force in most regions of Eastern Bulgaria, with gale-force winds and fresh snowfall expected, the national weather service says.
Residents of northwestern Bulgaria are gathering signatures in a petition for a referendum on whether a tunnel should be built under the Petrohan mountain pass.
Snowfall and snowdrifts on the roads, low temperatures and disruption in electricity supply in several northeastern Bulgarian regions are still being addressed, outgoing Regional Development Minister Lilyana Pavlova has said.
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