More information about past mass atrocities in Guatemala: http://www.humanrightsfirst.org/defenders/hrd_guatemala/hrd_jpc.asp

HRF joint NGO letter in February 2008 about threats against Peccerellli's organization, Foundation for Forensic Anthropology in Guatemala (FAFG): http://www.humanrightsfirst.info/pdf/080229-hrd-fafg-letter-eng.pdf