Police have arrested two men on charges of murder nearly four months after officials pulled a New York woman's decapitated head from a canal in Florida's Alligator Alley.

Paul Bryan Trucchio, 33, and Robert Mackey, 39, have been charged with grand theft and first-degree murder in the death of Lorraine Hatzakorzian, a 41-year-old Mastic, N.Y., woman who disappeared in April, according to a Broward County Sheriff's Department report.

According to the incident report, Hatzakorzian left New York with both men in her pickup truck and at some point there was a disagreement, police said. It appeared that she was bound, beaten unconscious and dismembered, with the suspects allegedly disposing of her body parts as they made their way to Florida.

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Both men were arrested Saturday, ending a nearly four-month investigation that began April 28, when Hatzakorzian's decapitated head was found in a canal in western Broward County. A plastic grocery bag from Waldbaum's, a supermarket chain located only in New York, lead police north.

Hatzakorzian's mother told authorities she had seen her daughter leave New York with both men in April. The missing woman picked up a money order on April 16 from a Waldbaum's on Long Island, N.Y., police said.

But it took the men's roommate to help break the case.

Officials said in the incident report released Monday that Trucchio and Mackey's Port Orange, Fla., roommate approached police in July, saying that the men "had bragged about murdering a white female and dumping her body parts in Florida."

A background check found that Trucchio and Mackey had been stopped in Hatzakorzian's 1998 Dodge Dakota pickup on May 1 for traffic citations.

The roommate also told officials that he had seen the pair cleaning items with bleach and hydrochloric acid, and could lead them to the discarded New York license plate from the missing woman's pickup.

The license plate was found on July 19 in Rose Bay. While executing a search warrant at the home where Trucchio and Mackey lived, police gathered tree trimming items, such as pole saws and chain saws, according to the report.

Both men were being held in a Volusia County jail without bond. Authorities said they didn't know if either had obtained an attorney.

Police were still searching for the rest of Hatzakorzian's body. Thus far, only her head has been found.

The Associated Press contributed to this report.

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