WALTERBORO, S.C. (AP) — A man in jail already awaiting trial on three murder charges has been charged with killing two more people in South Carolina.

Arrest warrants say 19-year-old Kenneth Chisolm shot Lewis Ramsey and Julie Poston in their Walterboro home in October 2016 while stealing marijuana and money.

Chisolm is already in jail charged with the May killings of a 46-year-old man, his 42-year-old wife and their 13-year-old son in their Colleton County home.

Investigators say marijuana was also found in that home.

Chisolm was ordered to remain in jail without bond after the latest murder charges.