By Lanford Beard
May 18, 2012 at 02:44 PM EDT

The Federal Bureau of Investigation’s Honolulu field office is looking into death threats sent to Duane “Dog” Chapman, reports Starting April 30, the the Dog the Bounty Hunter star received a series of e-mails over four days that detailed graphic, violently sexual suggestions about Chapman’s daughters.

The letters (which can be seen in full on Radar Online) allege “a rather nasty vendetta” against the Chapman family and include threats like this one: “I’m going to murder you. I’m going to come to Hawaii and murder you and your family in cold blood. You are next on my list and are the bane of society. I will deliver you to God.” Per a statement from the Chapmans, they are “taking these threats seriously.”

Read more:

Coroner: ‘Swamp People’ star died of natural causes

The ‘Cops’ Effect

EW Gallery: Reality TV Families = Scripted Ones?