Human rights advocates on Monday welcomed the conviction of Roberto David Castillo Mejía, a Honduran businessman and former military intelligence officer, for the March 2016 assassination of Indigenous environmental activist Berta Cáceres, while calling on authorities in the Central American nation to bring everyone involved in planning the murder to justice.\r\n\r\n\u0022Until all\u0026nbsp;those responsible\u0026nbsp;are held\u0026nbsp;accountable,\u0026nbsp;other human rights defenders\u0026nbsp;in Honduras\u0026nbsp;will continue to lose their lives.\u0022\r\n—Erika Guevara-Rosas, Amnesty International\r\n\r\nThe Guardian reports the Tegucigalpa high court found Castillo—formerly head of the dam company Desarrollos Energéticos, or DESA—guilty of collaborating in Cáceres\u0026#039; murder. The court ruled that Cáceres was killed for leading the campaign to stop construction of the $50 million Agua Zarca dam, a local grassroots effort which caused delays and monetary losses for DESA.\r\n\r\nThe environmentally destructive hydroelectric project is located on the Gualcarque River, which is sacred to the Indigenous Lenca people, and was approved despite its failure to comply with Honduran and international environmental requirements.\r\n\r\nCáceres, who was 44 years old when she was murdered, was co-founder and coordinator of the Council of Popular and Indigenous Organizations of Honduras (COPINH), a group dedicated to the defense of the environment in Intibucá and the protection of the Lenca. In 2015 she received the prestigious Goldman Environmental Prize for leading \u0022a grassroots campaign that successfully pressured the world\u0026#039;s largest dam builder to pull out of the Agua Zarca Dam\u0022 project at Río Gualcarque.\r\n\r\nAccording to The Guardian:\r\n\r\n\r\nAfter a trial that lasted 49 days, the high court... ruled that Castillo used paid informants as well as his military contacts and skills to monitor Cáceres over years, information which was fed back to the company executives. He coordinated, planned and obtained the money to pay for the assassination of the internationally acclaimed leader, which was carried out by seven men convicted in December 2018.\r\n\r\n\r\nCOPINH hailed Monday\u0026#039;s verdict as \u0022a popular victory for the Honduran people\u0022 that \u0022means the criminal power structures failed to corrupt the justice system.\u0022\r\n\r\n\u0022Berta lives, the fight continues!\u0022 the group tweeted.\r\n\r\n\r\n\r\nErika Guevara-Rosas, Americas director at Amnesty International, said in a statement that \u0022the long-awaited prosecution of David Castillo, convicted as co-author of the murder of Berta Cáceres, is an important step towards justice and the result of her family and COPINH’s tireless efforts to secure truth, justice, and reparation. However, justice for Berta will never be truly complete until everyone who took part in the crime, including those who planned it, is brought to justice.\u0022\r\n\r\n\u0022We urge the prosecutors to keep uncovering the truth,\u0022 Guevara-Rosas continued. \u0022Until all those responsible are held accountable, other human rights defenders in Honduras will continue to lose their lives, for raising their voices and defending the most vulnerable. The Honduran authorities must put an end to impunity.\u0022\r\n\r\nNoting that Honduras is \u0022the most dangerous country for defenders of land, territory, and the environment,\u0022 Guevara-Rosas admonished the Honduran government, which she said \u0022seems to look the other way when human rights defenders are attacked instead of fulfilling its obligation to protect them.\u0022\r\n\r\n\u0022Authorities must take this seriously and do whatever is necessary to keep human rights defenders safe from harm, so that a crime like the murder of Berta Cáceres is never repeated,\u0022 she added.\r\n\r\n\r\n\r\nA 2019 profile (pdf) of Castillo by five human rights advocacy groups states:\r\n\r\n\r\nEvidence suggests that the murder of Berta Cáceres was part of a pattern of violence, corruption, intimidation, malicious prosecution, and impunity for violence orchestrated by Castillo and others at DESA, who appear to have functioned as a criminal structure...\r\n\r\nCastillo and his associates and employees at DESA enlisted the support of key agencies of the Honduran government, using influence in the Ministry of Security, police, and military and improper influence in the Honduran judiciary, seemingly to advance efforts to intimidate, persecute, and neutralize Berta Cáceres and COPINH\u0026#039;s opposition to the Agua Zarca Hydroelectric Project.\r\n\r\nDESA, and representatives it employs, continue to promote the stigmatization of Berta Cáceres, COPINH and Indigenous Lenca villagers in Río Blanco after Cáceres\u0026#039; murder.\r\n\r\n\r\nPrior to Castillo\u0026#039;s arrest, eight other men, including Douglas Bustillo and Sergio Rodríguez, both of whom worked with Castillo at DESA corporation, and both graduates of the U.S. Army School of Americas (SOA), were arrested and charged with Cáceres\u0026#039; murder. Bustillo, Rodríguez, and five other men were convicted of murdering Cáceres in 2018.\r\n\r\nA 2017 report (pdf) by international legal experts concluded Cáceres\u0026#039; murder was not an \u0022isolated incident\u0022 and alleged \u0022willful negligence by financial institutions.\u0022 The report found that the targeting of Cáceres was part of a \u0022strategy\u0022 by DESA employees, private security firms, and public officials \u0022to violate the right to prior, free, and informed consultations of the Lenca.\u0022\r\n\r\n\u0022The strategy was to control, neutralize, and eliminate any opposition,\u0022 the report said. \r\n\r\n\r\n\r\nCáceres co-founded COPINH in 1993 and led campaigns against dam building, illegal logging, U.S. military bases on Lenca land, and other environmental and social injustices. Her work became increasingly dangerous following a 2009 coup perpetrated by SOA-trained military officers and backed by the Obama administration, as numerous activists were assassinated, attacked, or threatened for their work.\r\n\r\nShortly before her assassination, Cáceres excoriated former U.S. Secretary of State Hillary Clinton for her role in the coup.