Mexico nursery fire charges

Prosecutors in Mexico have arrested seven regional officials over the deaths of 47 children in a fire at a day-care centre earlier this month.



The attorney general of northern Sonora state said the officials, from the state\'s finance department, are being charged with negligent homicide.



The department was in charge of the operations at a warehouse next to the nursery, where the fire started.



Investigators found no fire alarms or extinguishers in the warehouse.



The property was used to store cars, tyres and paperwork for the state.



Sonora State Attorney General Abel Murrieta said arrest warrants had also been issued for six other Finance Department officials.



Investigators say the fire may have been caused by a short circuit or overheating in the warehouse air conditioning system.