Defense Minister Rafael Rey announced that Shining Path militants had attacked a military outpost in southern Ayacucho province. One soldier was killed and three others wounded in the assault. 2010s: Capture of Artemio and continued downfall On 28 April 2010, Shining Path rebels in Peru ambushed and killed a police officer and two civilians who were destroying coca plantations of Aucayacu, in the central region of Haunuco, Peru. The victims were gunned down by sniper fire coming from the thick forest as more than 200 workers were destroying coca plants. Following the attack, the Shining Path faction, based in the Upper Huallaga Valley of Peru and headed by Florindo Eleuterio Flores Hala, alias Comrade Artemio, was operating in survival mode and lost 9 of their top 10 leaders to Peruvian National Police-led capture operations. Two of the eight leaders were killed by PNP personnel during the attempted captures. The nine arrested or killed Shining Path (Upper Huallaga Valley faction) leaders include Mono (Aug. 2009), Rubén (May 2010), Izula (Oct. 2010), Sergio (Dec. 2010), Yoli/Miguel/Jorge (Jun. 2011), Gato Larry (Jun. 2011), Oscar Tigre (Aug. 2011), Vicente Roger (Aug. 2011), and Dante/Delta (Jan. 2012). This loss of leadership, coupled with a sweep of Shining Path (Upper Huallaga Valley) supporters executed by the PNP in November 2010, prompted Comrade Artemio to declare in December 2011 to several international journalists that the guerrilla war against the Peruvian Government has been lost and that his only hope was to negotiate an amnesty agreement with the Government of Peru. On 12 February 2012, Comrade Artemio was found badly wounded after a clash with troops in a remote jungle region of Peru. President Ollanta Humala said the capture of Artemio marked the defeat of the Shining Path in the Alto Huallaga valley – a center of cocaine production. President Humala has stated that he would now step up the fight against the remaining bands of Shining Path rebels in the Ene-Apurímac valley. Walter Diaz, the lead candidate to succeed Artemio, was captured on 3 March, further ensuring the disintegration of the Alto Huallaga valley faction. On 3 April 2012, Jaime Arenas Caviedes, a senior leader in the group's remnants in Alto Huallaga Valley who was also regarded to be the leading candidate to succeed Artemio following Diaz's arrest, was captured. After Caviedes, alias "Braulio", was captured, Humala declared that the Shining Path was now unable to operate