A police report said Michael Graham, Martin Hoskins and Amy Young did not help Gregory Lane last week when he was discovered unresponsive at a home on Mocks Creek Drive.
Court documents said Lane died of a reaction to synthetic drugs.
Investigators said 15 pounds of synthetic drugs had been found in the home.
Deputies believed the substance was what was known as Serenity.
They said they believed that drug trafficking had been taking place in the home.