CFE said service was fully restored by 3:08 a.m. on Tuesday, and that it would continue inspections to determine the circumstances of the outage. ^[1] Mexico's Comisión Federal de Electricidad (CFE) reported that a power outage began around 8 p.m. on Monday, affecting users in the states of Yucatan, Quintana Roo, Campeche and Chiapas. ^[2] President Claudia Sheinbaum of Mexico said on 2026-09-01 that the government is advancing in strengthening the Federal Electricity Commission (CFE). ^[3] Two men, identified as Mario "N" and Tomás "N", were detained by the Guardia Nacional in El Centinela, Baja California, for transporting 584 liters of diesel allegedly stolen from a CFE tanker. ^[4] CFE reported at 11:01 p.m. that the disconnection had partially affected power supply in the Yucatan Peninsula and southeastern Mexico. ^[5] CFE said its first update showed restoration progress at 55% for affected users in the four states. ^[6] Sheinbaum said on 2026-09-01 that an investment of more than 244 billion pesos is underway to modernize and expand CFE transmission and distribution networks. ^[7] The diesel was reportedly stolen from a tanker truck containing 46,000 liters of fuel belonging to the Comisión Federal de Electricidad (CFE). ^[8] The Fiscalía General de la República (FGR) obtained the vinculación a proceso for the two suspects and imposed prisión preventiva (preventive prison custody). ^[9] A blackout affected the Mexican states of Quintana Roo, Campeche, Yucatán, and Chiapas one day before President Claudia Sheinbaum's September 1, 2026 statement. ^[10] The judge granted the FGR a three-month deadline to conclude the complementary investigation stage. ^[11]