The Minnesota State patrol is still investigating a crash that left a Rosemount teen dead yesterday.According the state patrol, 15 year old David Peterson of Rosemount was killed in Eagle Lake when he was hit by a car while riding his bike.It happened on County Road 27, north of Highway 14.27 year old Ryan Veith of Kasota was driving that SUV that hit Peterson.His condition along with a passenger is not reported.The state patrol tells us today Peterson was wearing a helmet at the time of the crash.