security officers to use "deadly force" on rioters that threatened her fledgling government's grip on power. The United States Transit Center Manas was attacked by revolutionaries armed with firearms and grenades. The base itself was engaged in a stand off with 2 heavily armored personnel carriers. Intelligence received was that the local revolutionaries were going to attempt to reclaim the base and airfield should any member for the former government attempt to escape. On 22 April 2010, it was announced that a constitutional referendum, in order to reduce presidential powers and "strengthen democracy", would be held on 27 June 2010; a general elections would then follow on 10 October 2010. On 13 May 2010, numerous government buildings were stormed by supporters of the ex-president in Jalal-Abad, Batken and Osh, forcing the interim governor of Jalal-Abad to flee. On 14 May conflicting reports emerged of deaths of pro-Bakiev supporters after a conflict with interim government forces in Jalal-Abad, with pro-Bakiev groups reporting 8 dead, whilst the Kyrgyz Health Ministry reporting 65 injured, 15 of them critically with one of the critically injured dying the next day. On 19 May 2010, pro-Bakiev supporters clashed with supporters of local Uzbek leader Kadyzhan Batyrov in the southern city of Jalal-Abad, accusing him of allowing his followers to use guns on pro-Bakiev protestors on 13 May. Fighting intensified near the University of Peoples' Friendship resulting in the deaths of at least two people and 16 further injuries. Later that day Roza Otunbayeva became the temporary president of Kyrgyzstan. On 31 May, Uzbekistan moved troops to its border with Kyrgyzstan due to increasing border tensions as clashes between two villages on opposite sides of the border occurred and villagers rampaged destroying roads and water pipes. Uzbek assault troops and armoured vehicles arrived on the border to prevent further clashes. June riots On 9 June violence erupted in the southern city of Osh with ethnic Kyrgyz rioting, attacking minority Uzbeks and lighting their property ablaze. By the 12th the violence had spread to the city of Jalal-Abad. The spreading of the violence required the Russian-endorsed interim government led by Roza Otunbayeva to declare a state of emergency on 12 June, in an attempt to take control of the situation. Uzbekistan launched a limited troop incursion early on, but withdrew and opened its borders to Uzbek refugees. The clashes killed up to 2,000 people, mostly Uzbeks, and another