BATON ROUGE, LA (WAFB) - A man in prison, accused of murdering his grandfather, is now facing an additional charge after allegedly trying to kill another inmate.
Dustin Musso has been charged with attempted second-degree murder.
The East Baton Rouge Parish Sheriff's Office said he offered to shave another inmate's neck through his cell bars Friday.
However, officials added when Musso was done, he cut the man's throat.
Prison detectives said the other inmate was in jail on child molestation charges and after the attack, Musso reportedly yelled, "I'm trying to rid the world of child molesters."
The victim received several stitches.
Authorities said Musso also spit on detectives after the incident.
He faces charges related to that as well.
Musso, 30, is charged with first-degree murder in the death of his grandfather, Pete Musso, 76.
The elderly man was killed in his Baton Rouge home in 2009.
Musso is accused of killing his grandfather, setting the house on fire and then taking a bus to Alabama.
Pete Musso lived at a home on Glenda Drive in Baton Rouge, where a fire started around 3:40 a.m. on May 5, 2009.
The East Baton Rouge Parish Coroner's Office said he experienced some sort of trauma to the head, which is why police began investigating it as a murder.
Dustin Musso was taken into custody at a bus station in Montgomery, AL the same morning as the murder and fire.
He was initially charged with felony theft, but the charges were later upgraded. In September 2009, a Baton Rouge grand jury indicted him for first-degree murder.
According to the victim's granddaughter, Pete Musso took in his grandson to live with him.