1986: Cerezo Presidency   Vinicio Cerezo Arevalo elected as the first civilian president since Montenegro. Violence continues, as illustrated by the assassination of anthropologist Myrna Mack Chang. 1991: Serrano Presidency   Peace talks begin with an accord signed between representatives of the URNG and the Guatemalan Government committing them to internationally verified negotiations. In 1992, Rigoberta Menchu Tum wins the Nobel Peace Prize for her struggle in defense of indigenous rights. Rebel leader Commander Everardo, husband of U.S. lawyer and human rights activist Jennifer Harbury, is wounded in battle and captured by the military for interrogation. He is then tortured by the G-2 and killed by Col. Alpirez, a CIA-paid "asset".