Mexico ? Federal prosecutors in Mexico say they have obtained nine arrest warrants for the owners and legal representatives of a day care center where a fire killed 48 children.

The attorney general’s office says the suspects, including one health sector official, face charges of improper use of authority. Some are also charged with negligent injury and negligent homicide.

Witnesses say there was only one working exit and insufficient safety precautions at the day care center in Hermosillo, the Sonora state capital.