Hans Peter Doskozil, chief of the Burgenland police, informs the media at a news conference in Eisenstadt, Austria, on Aug. 27, 2015. A truck with Hungarian license plates parked at the side of the highway to Vienna early Thursday morning was discovered to have dozens of dead bodies inside, Austrian police said on Thursday. (Xinhua/Qian Yi)

Photo taken on Aug. 27, 2015 shows the general view of the news conference at a police station in Eisenstadt, Austria. A truck with Hungarian license plates parked at the side of the highway to Vienna early Thursday morning was discovered to have dozens of dead bodies inside, Austrian police said on Thursday. (Xinhua/Qian Yi)

Hans Peter Doskozil, chief of the Burgenland police, informs the media at a news conference in Eisenstadt, Austria, on Aug. 27, 2015. A truck with Hungarian license plates parked at the side of the highway to Vienna early Thursday morning was discovered to have dozens of dead bodies inside, Austrian police said on Thursday. (Xinhua/Qian Yi)

Local citizens hold a banner reading: "Refugees welcome" in front of the police station in Eisenstadt, Austria, on Aug. 27, 2015. A truck with Hungarian license plates parked at the side of the highway to Vienna early Thursday morning was discovered to have dozens of dead bodies inside, Austrian police said on Thursday. (Xinhua/Qian Yi)

Hans Peter Doskozil(L), chief of the Burgenland police, informs the media at a news conference in Eisenstadt, Austria, on Aug. 27, 2015. A truck with Hungarian license plates parked at the side of the highway to Vienna early Thursday morning was discovered to have dozens of dead bodies inside, Austrian police said on Thursday. (Xinhua/Qian Yi)

Investigators check the truck in which dozens of dead bodies were found at the side of the highway to Vienna near Parndorf, Austria, on Aug. 27, 2015. A truck with Hungarian license plates parked at the side of the highway to Vienna early Thursday morning was discovered to have dozens of dead bodies inside, Austrian police said on Thursday. (Xinhua)

Investigators are seen around the truck in which dozens of dead bodies were found at the side of the highway to Vienna near Parndorf, Austria, on Aug. 27, 2015. A truck with Hungarian license plates parked at the side of the highway to Vienna early Thursday morning was discovered to have dozens of dead bodies inside, Austrian police said on Thursday. (Xinhua)

Local citizens light up candles to mourn the refugee victims in front of the police station in Eisenstadt, Austria, on Aug. 27, 2015. A truck with Hungarian license plates parked at the side of the highway to Vienna early Thursday morning was discovered to have dozens of dead bodies inside, Austrian police said on Thursday. (Xinhua/Qian Yi)

Hans Peter Doskozil, chief of the Burgenland police, informs the media at a news conference in Eisenstadt, Austria, on Aug. 27, 2015. A truck with Hungarian license plates parked at the side of the highway to Vienna early Thursday morning was discovered to have dozens of dead bodies inside, Austrian police said on Thursday. (Xinhua/Qian Yi)