Four people have been arrested in connection with a homicide investigation following the discovery of two bodies in Madison and Grant counties. The body of the first murder victim was found at a nature preserve on the east side of Anderson around 9 a.m. Monday. Authorities have identified that victim as 36-year-old David Lamar Phillips II of Anderson. The body of 40-year-old Trinity Parker was discovered Tuesday in Grant County about a mile from the Madison County line. Taylor Wheeler, Jordan Zirkle, Brittney Vontress, and Daniel Jones are in police custody and are facing murder charges.