A Louisiana triple-murder suspect who was apprehended in Lewiston in May has pleaded innocent to the murder charges.

Robert McCoy, 34, is charged in the May 5 shooting deaths of his estranged wife’s son and parents in Bossier City, Louisiana.

He was captured May 9 on Lewiston’s Normal Hill while traveling as a passenger in a semi-truck - a handgun believed to be the one used in the killings was also recovered.

While being held in the Nez Perce County Jail he was found hanging from a bedsheet in his cell, and was extradited back to Louisiana the following week, where he again attempted suicide in his cell.

Prosecutors have also charged McCoy with aggravated battery for an April incident in which he allegedly cut his wife’s neck during a confrontation – the district attorney says McCoy was arraigned on the charge to use it as evidence of other crimes during McCoy’s murder trial.

McCoy faces the death penalty if convicted on the murder charges. No trial date has been set.