Somer Thompson Cause of death

Florida:Still 7-year old Somer Thompson death has not been identified,what forces behind it .who did murdered of this innocent girls who disappeared while walking the mile home from school on october 19th 2009 and was discovered dead days later. Florida Police are keeping quiet on what exactly killed 7-year-old Somer Thompson who found dead in a Georgia landfill.One spoke person summarized this investigation in this way that "We know the cause of death",We want to preserve the integrity of this investigation and are not releasing any information that in the long run would prevent us from prosecuting and convicting the person who did this to Somer [Thompson].Sister of somer told her to stop arguing with a playmate, Somer ran ahead of the group and was never seen again. Her disappearance triggered a countywide search involving helicopters, dogs and volunteers walking arm-to-arm through wooded areas.Graham, N.C.,father of somer Thompson, pleaded for her safe return.Police have questioned more than 70 registered sex offenders in the area. Florida Department of Law Enforcement records show 161 offenders live in a 5-mile radius of Somer’s home.