"A three-day national mourning in connection with the tragedy on line 12 of the collective transport system of the Mexico City metro was announced from May 3 to May 7", - the document says. State flags will be lowered during this period.
It's worth reminding that late in the evening of May 3 in the southeast of Mexico City the metro bridge with a train moving along it collapsed. At least 25 people have died, including a 13-year-old child. Their names were published on Twitter by the local prosecutor's office. About 80 more people were hurt.