JACKSON, Tenn. (AP) — A third person has been arrested and charged with murder in the slayings of a father and his 13-year-old son in a rural West Tennessee town last week.

The Tennessee Bureau of Investigation said in a news release that 21-year-old Andrian Monique Bullock was charged with two counts of first-degree murder Wednesday following the deaths of 38-year-old Joe Robertson and his son Javarrie Robertson.

Their bodies were found Friday morning in a home in Toone, located about 65 miles east of Memphis. Authorities say they had gunshot wounds.

Earlier Wednesday investigators had arrested two male cousins in connection with the slayings: 25-year-old Damein K. Hamer and 29-year-old Jeremy Hamer.

A 5-year-old girl and a newborn girl were in the home at the time of the killings, but they weren’t hurt.