Comisión Federal de Electricidad (CFE), Mexico's state-owned electric utility, filed a criminal complaint with the federal Attorney General's Office (FGR) after detecting intentional damage to two high-voltage transmission lines at the Escárcega-Ticul link in Hecelchakán, Campeche, Mexico. ^[1] The Comisión Federal de Electricidad (CFE) filed a formal complaint with the Fiscalía General de la República (FGR) alleging intentional damage to electrical infrastructure caused a massive blackout. ^[2] The CFE summer electricity subsidy period for Sonora households under the Tariff 1F scheme concludes on October 31, 2026. ^[3] CFE specialists claimed that the damage to insulator discs and high-voltage structures at the Escárcega-Ticul link was deliberate and showed precision indicating it was carried out by individuals with technical knowledge of the electrical grid. ^[4] Mexican energy authorities stated that five acts of vandalism against electrical infrastructure in the region have been recorded in 2026, and they will maintain security and intelligence measures with local and federal forces. ^[5] The outage began on the afternoon of 2026-08-31 and was fully resolved by the early hours of 2026-09-01, with CFE's technical staff working 7 hours and 9 minutes to restore service. ^[6] On September 1, the CFE presented the corresponding complaint to the FGR to investigate the facts and determine responsibilities. ^[7] Specialized personnel from the CFE detected damage to insulator discs and cabling with indications that the damage was caused intentionally. ^[8] The outage affected approximately 1.2 million customers across four states, with Yucatán being the hardest hit, accounting for 41.51% of its network. ^[9] The current summer support agreement in Sonora is valid from April 1 to October 31, covering a seven-month period. ^[10] The Tariff 1F scheme is designed to expand subsidized consumption ranges during months with higher temperatures. ^[11] Final electricity bill amounts depend on registered consumption, included billing days, and the date the meter was read for calculation. ^[12]