Progreso backstep

From the Newschannel 5 website

http://www.newschannel5.tv/2006/3/30/7038/Sheriff-s-department-called-in

Seems that there is twist. There is no six year old brother who may have shot her:

"What is not known is who shot her. On Wednesday, police told NEWSCHANNEL 5 the girl shot herself. That story changed Thursday when police said the girl's 6-year-old brother shot her. The only problem with the claim: Saldana does not have a 6-year-old brother. "

So three days later, the Progreso PD calls in the County Sheriff for assistance. At this point the whole crime scene is possibly contaminated and key evidence destroyed.

Why did it take Progreso PD three days to call in the Sheriff? Who leaked the info about the six year old brother? In some of these cases the local authority must put their pride to the side and call in the big boys.