The Latest: Thousands more migrants reach Slovenia, after 6,000 arrived on Monday

Migrants walk in the field near a border line between Serbia and Croatia, near the village of Berkasovo, Serbia, Tuesday, Oct. 20, 2015. Thousands of people trying to reach the heart of Europe surged across Serbia's border into Croatia on Monday after authorities eased restrictions that had left them stranded for days in ankle-deep mud and rain. (AP Photo/Darko Vojinovic) (The Associated Press)

Migrants prepare firewood in the field near a border line between Serbia and Croatia, near the village of Berkasovo, Serbia, Tuesday, Oct. 20, 2015. Thousands of people trying to reach the heart of Europe surged across Serbia's border into Croatia on Monday after authorities eased restrictions that had left them stranded for days in ankle-deep mud and rain. (AP Photo/Darko Vojinovic) (The Associated Press)

Refugees rest after their arrival from the Turkish coast to Skala Sikaminias village on the northeastern Greek island of Lesbos, early Tuesday, Oct. 20, 2015. Refugee crisis continues unabated as more than 600,000 people, mostly Syrians, have reached Europe since the beginning of this year. (AP Photo/Santi Palacios) (The Associated Press)

The latest news as migrants fleeing war or seeking a better life make their way across Europe by the tens of thousands. All times local.

9:15 a.m.

Soldiers and police, some on horseback, escorted some 2,000 migrants to an overcrowded reception center in Slovenia after arriving from Croatia in the middle of the night. Authorities say another thousand arrived Tuesday morning.

Wrapped in plastic raincoats and blankets, the migrants were walking toward a refugee camp in nearby Brezice. Later, they were expected to be distributed to other camps.

Croatia has been sending migrants to the border with Slovenia since Saturday, when Hungary blocked passage to migrants from Croatia with a border fence protected by razor wire, soldiers and police patrols.

Slovenia's government said 6,000 migrants, mostly women and children, arrived on Monday.