Austrian police say that about 1,000 refugees and other migrants were registered on Saturday and overnight as they arrived at one of the country's main border crossings with Slovenia. Police in Styria province said that around 500 of those arrived at the Spielfeld crossing in Austria's southeastern corner between the evening and Sunday morning, the Austria Press Agency reported. Croatian police said Sunday nearly 4,000 people remained in the refugee camp in Opatovac, where some 50 buses were parked waiting to take the migrants toward Slovenia, the next step on their journey.