Europe

Serbia introduces lockdown for migrants in Belgrade center

  • Migrants walk by an abandoned brick factory in the northern Serbian town of Subotica, near the border between Serbia and Hungary, Wednesday, Feb. 1, 2017. Thousands of migrants have been stranded in Serbia and looking for ways to cross illegally into the European Union. (AP Photo/Darko Vojinovic)

    Migrants walk by an abandoned brick factory in the northern Serbian town of Subotica, near the border between Serbia and Hungary, Wednesday, Feb. 1, 2017. Thousands of migrants have been stranded in Serbia and looking for ways to cross illegally into the European Union. (AP Photo/Darko Vojinovic)  (The Associated Press)

  • Migrants covered with blankets rest in an abandoned brick factory in the northern Serbian town of Subotica, near the border between Serbia and Hungary, Wednesday, Feb. 1, 2017. Thousands of migrants have been stranded in Serbia and looking for ways to cross illegally into the European Union. (AP Photo/Darko Vojinovic)

    Migrants covered with blankets rest in an abandoned brick factory in the northern Serbian town of Subotica, near the border between Serbia and Hungary, Wednesday, Feb. 1, 2017. Thousands of migrants have been stranded in Serbia and looking for ways to cross illegally into the European Union. (AP Photo/Darko Vojinovic)  (The Associated Press)

  • Migrants walk along train tracks close to the northern Serbian town of Subotica, near the border between Serbia and Hungary, Wednesday, Feb. 1, 2017. Thousands of migrants have been stranded in Serbia and looking for ways to cross illegally into the European Union. (AP Photo/Darko Vojinovic)

    Migrants walk along train tracks close to the northern Serbian town of Subotica, near the border between Serbia and Hungary, Wednesday, Feb. 1, 2017. Thousands of migrants have been stranded in Serbia and looking for ways to cross illegally into the European Union. (AP Photo/Darko Vojinovic)  (The Associated Press)

Serbia has introduced a lockdown for migrants in their refugee center in Belgrade.

Officials said Wednesday the migrants staying in the center on the outskirts of the capital will need special permissions to leave and need to be back by 10 p.m. each night.

The measure has been introduced after a woman claimed she was attacked by migrants near the camp while walking with her three children. She said they wanted to take away the stroller with her baby inside.

Officials said police are investigating her claim.

Some 550 migrants are staying in the camp. It is not clear whether the measure includes all other shelters in Serbia.

Some 7,000 migrants have been stranded in Serbia following Balkan border closures last year and the EU's attempts to control immigration.