A man accused of killing three women in the Portland area and dumping their bodies has been indicted on a fourth murder charge.

A 37-year-old man — who local media say is known as the "machete man" — was arrested after a raid on his home last week yielded human "bones, blood, pieces of skin and even a nose," Attorney General Sergio Lello Sanchez of the Jujuy province told AFP by telephone Tuesday.

Authorities this week charged Jesse Calhoun with a fourth murder, and at least one other victim could be added to the tally. Author and forensic psychologist Katherine Ramsland tells "Banfield" that Calhoun’s alleged pace of murdering women suggests he may have felt invincible and developed “a sort of addiction to it.