The Centre County Coroner has been sent to a farm in Centre Hall where three people died in a farming accident. State police and emergency crews were sent to the farm around 8:30 a.m. Wednesday morning at 2926 lower Brush Valley Road in Potter Township. According to authorities on scene, a 47-year-old man, 19-year-old man and 14-year-old boy were trapped inside of a silo. The cause of the accident is not confirmed but neighbors say it was a ripple effect with one going to help the next as gas in the silo likely killed them in the process.