 Authorities are looking into the death of a nine-year-old boy who drowned in the Lock Raven Reservoir in Baltimore County. Police responded to a request to assist with the water rescue around 5 p.m. on Monday in the area around Delaney Valley Road Bridge. The child was located submerged by the fire department personnel at the scene. They're unsure how long he remained under the water. Authorities report that the boy was at the reservoir with his family. An autopsy to determine how the boy died is being conducted by the medical examiner.