Mexican authorities have arrested seven state officials in connection with a fire at a day care centre earlier this month that killed 47 children.![Fourty-seven children were killed when the fire broke out at the day care centre in Hermosillo [EPA]](http://mwcnews.net/images/stories/Global2/b/2/3/4/5/Mexico-day-care.jpg "Fourty-seven children were killed when the fire broke out at the day care centre in Hermosillo [EPA]")
Fourty-seven children were killed when the fire broke out at the day care centre in Hermosillo [EPA]
The fire started at a warehouse in the northern city of Hermosillo on June 5, and spread to a child care centre located near by.
The Mexican government announced on Monday that the officials are being charged with negligent homicide.
Those arrested worked for the state's finance department, which operates the warehouse where the fire started.
Official government accounts say the blaze began when melted aluminium from a faulty air conditioner ignited paper on the floor of the warehouse.
The fire then spread into the rafters of the industrial building and across to the day care centre.
Soon after the incident, Felipe Calderon, the Mexican president, ordered an investigation into the fire.
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But building safety standards continue to be questioned after previous deadly incidents.
In 2000, a fire killed 21 people at a Mexico City nightclub that only had one available exit, lacked smoke detectors and did not have enough fire extinguishers.
The emergency exit had been locked with a chain.
Last year, 12 people died in a police raid at another Mexico City nightclub. Officers blocked the crowded club's lone working exit, creating a deadly stampede.
Tags: Mexico