Reports two days after the blaze revealed, however, that although the warehouse had windows, they were mounted too high and did not provide access to the daycare center for rescue operations.

[13] Initial reports stated the fire began in an adjacent tire warehouse next door and spread to the child care center.

[18] A desperate passerby, Francisco Manuel López Villaescusa, drove his Silverado truck through the walls to gain entrance and knocked three holes into the building.

"[13] Two days later on Sunday, Sonora state Health Minister Raymundo López Vucovich announced, "In the past few hours three more have died.

Her mother, who had herself been working in the day care center, was taken to a Ciudad Obregón hospital after pulling her daughter and several other children out of the fire.

[20] The second patient, a young boy, began a series of skin graft surgeries on Sunday June 7, reported David Greenhalgh, chief of burn treatment at the Sacramento hospital.

[25] President Felipe Calderón placed federal attorney general Eduardo Medina-Mora in charge of the investigation to ascertain the cause of the fire.

The air conditioner melted its aluminum housing and spread to license plates and paper work in the state government warehouse, which was closed and empty when the fire started.

[29] Sonora attorney general Abel Murrieta Gutiérrez went on a media campaign accusing the IMSS of criminal negligence, stating that they had been aware of safety violations in the building ever since they had sent the warning letter in 2005.

"We always have to be open to improvements, especially when we have a tragedy that has so moved us," said IMSS director Kara, who admitted that their security requirements may need to be overhauled in light of the fact that the daycare passed safety inspection on May 26.

[34][35] A theory that was investigated was that the fire was intentionally started in the warehouse with the purpose of destroying potential evidence of excessive debts incurred by Eduardo Bours during his term as governor.

[39][40] Fourteen northern Sonora state finance department officials came under investigation and seven were arrested in connection with the fire for negligent homicide.

[42] The only person to serve any time was Delia Irene Botello Amante, an IMSS local coordinator who was the last government employee to visit to the daycare before the fire.

[42] The state Finance Department filed a negligence civil lawsuit against the day care owners and the Social Security Institute.

[43] Pope Benedict XVI sent a telegram to Archbishop of Hermosillo José Ulises Macías Salcedo offering his condolences, "Together with spiritual closeness, concern, and wishes for a speedy and total recovery of those injured in the lamentable incident....With these sentiments, the Supreme Pontiff, in these moments of sadness, imparts from the heart the comfort of an apostolic blessing, as a sign of comfort and hope in the Risen Lord.

[14] María, Julio, Fátima, Carlos, Sofía and Dafne were among the 41 pre-schoolers who were mourned at several funeral ceremonies that took place on the Saturday following the blaze.

[47] The parents of two-year-old María Magdalena Millán, among those buried Saturday, attached a Dora the Explorer balloon to the cross marking her grave, while her mother cried out, "I love you and I don't want to leave you here!

[11] The family of 2-year-old Daniel Alberto Goyzueta Cabanillas, who died of smoke inhalation, held a funeral late Saturday afternoon for the boy.

[22] In 2015, digital activist group ContingeneMX released a video partnered with many celebrities such as Rafael Amaya, that reenacted parent and witness testimony about the tragedy.