Nicholas Stanley, 35, was charged with murder over the fatal shooting of Allen Cogswell, who was recently released from prison for sexually assaulting Stanley's family member.
Jacob Ackerman, 43, was charged with second-degree murder and armed criminal action in connection with the death of his brother, who was found dead with a gunshot wound to the head.
James Vanderleest, 21, and his 48-year-old father, David, have been arrested in connection with the death of Vanderleest's ex-girlfriend's 2-year-old son.
Paris James, 37, and 28-year-old Jerry Scott were convicted of aggravated murder, aggravated burglary and tampering with evidence, among other charged over the killing of Tameisha Prince and her unborn child.