Prosecutors Won't Seek Death Penalty Against Husband Accused of Pushing Wife Off Cruise Ship

Kristy and Kenneth Manzanares
Kristy and Kenneth Manzanares left Seattle on a cruise bound for Alaska in July. (Facebook)

Federal prosecutors will not seek the death penalty in their case against a Utah man accused of pushing his wife to her death off an Alaska cruise ship.

Kenneth Manzanares has been charged with murder in the death of his wife, Kristy Manzanares, in July and has pleaded not guilty.

Watch: 8-Year-Old Girl Dies After Falling From Cruise Ship

Kristy, 39, was killed in her cabin aboard The Emerald Princess in what the FBI, which investigated the incident because it occurred in U.S. waters, described as a domestic dispute.

Kenneth Manzanares was arrested after authorities say they discovered his wife had "a severe head wound and blood was spread throughout the room" according to an FBI criminal complaint.

Investigators say Kenneth told a witness, "She would not stop laughing at me. My life is over."

Kenneth reportedly tried to jump overboard but was restrained by members of the ship's crew.

Watch: Husband of Woman Murdered on Cruise Ship Weeps in Court as He's Charged With Murder

The Utah couple was celebrating 18 years of marriage and their three teen daughters were with them on the vessel.

The U.S. attorney's office announced its decision to not pursue the death penalty in a court filing dated Friday.