EPPING, N.H. (AP) - New Hampshire police are charging the ex-husband of a woman whose body was found in a vacant concrete plant last week with murder.

Prosecutors say 36-year-old Aaron Desjardins of Epping killed Amanda “Amy” Warf. The medical examiner determined she died of multiple wounds to the necks.

Desjardins is charged with first-degree murder. His is scheduled for arraignment on Wednesday in Exeter District Court.

Police searched Desjardin's house over the weekend and he told the media he had nothing to do with his ex-wife's death.

The couple, who divorced in February 2012, have a 1-year-old son.

Warf's body was discovered by Exeter firefighters after they put out a fire at the concrete plant, which had been vacant for more than 20 years.