Inmates return to the pavilions just before the special police battalion invades the Alcacuz Penitentiary Center to regain control of the penitentiary in Rio Grande do Norte, Brazil, on January 18, 2017. - Brazilian authorities said Wednesday they are deploying 1,000 troops to "clean out" arms and cellphones from restive prisons while police struggled to end a deadly gang face-off at Alcacuz. The soldiers were being brought in to respond to a "national emergency" in the badly overcrowded prison system, Defence Minister Raul Jungmann said. (Photo by ANDRESSA ANHOLETE / AFP)
