2012–2013: Reopening and the "PNG solution" In 2012, a significant rise in the number of irregular maritime arrivals saw the "asylum issue" become a political liability for the government. The Gillard Government commissioned Angus Houston, former Chief of the Defence Force, to lead an expert panel to conduct a review of asylum arrangements. Among the 22 recommendations made in the Houston report was one to re-open the OPC facilities on Nauru and at the Manus Regional Processing Centre. In November 2012, the Manus Regional Processing Centre was re-opened by the Labor government, due to the large volume of irregular maritime arrivals. Then Immigration Minister Chris Bowen stated "At this stage, family groups are best accommodated on Manus Island, as opposed to Nauru." The British services company G4S was responsible for its operation. In July 2013, shortly after Kevin Rudd returned as prime minister for a second time, the government announced that boat arrivals would never be allowed to resettle in Australia. The following month, it agreed to give Papua New Guinea A$400m (£230m; $310m) in aid in exchange for their part of the deal, which included agreeing to resettle refugees. Officially called the Regional Resettlement Arrangement between Australia and Papua New Guinea, the policy became known as the PNG Solution. On 19 July 2013 Rudd and Papua New Guinean Prime Minister Peter O'Neill announced the Regional Resettlement Arrangement policy in Brisbane. After the Liberal/National coalition won the federal election on 7 September 2013, Tony Abbott was sworn in as Prime Minister, and Operation Sovereign Borders came into effect, reinforcing the policy of no maritime arrivals being resettled in Australia. The Australian government's decision to resume offshore processing met with domestic political opposition from the Greens. In March 2014, the contract with G4S expired, and the Australian government entered into a 20-month contract worth AUD $1.22 billion with Broadspectrum (which operated the facility in Nauru) for facilities management including building maintenance and catering, with security provided by Wilson Security. 2014 Riots; murder of Reza Barati On 17 February 2014, a series of protests by detainees at the centre escalated into a serious disturbance, which resulted in injuries to about 70 asylum seekers as well as the death of one detainee: 23-year-old Iranian asylum seeker Reza Berati was murdered by being struck with wood and a rock. In April 2016 two detention centre workers, Joshua Kaluvia and Louie Efi, were each sentenced