The man authorities believe murdered his two daughters and their mothers last week was found dead Monday morning in the town of Cottage Grove in the vehicle that police had been looking for since Thursday's killings.

Dane County Coroner Ray Wosepka said Tyrone M. Adair, 38, suffered a gun injury. Wosepka would not say if the injury was self-inflicted, but police said they are not looking for any suspects in connection with Adair’s death.

An autopsy is scheduled for Tuesday at 9 a.m.

Adair's body was found on private property at 3479 Natvig Road, off Highway N just north of Highway 12-18, in a snow-covered Silver Acadia belonging to one of the victims, Tracy Judd, also known as Tracy Graser. Judd, 33, lived with Adair, but had told friends and relatives she was trying to end their relationship, Dane County Sheriff Dave Mahoney said Monday.

Mahoney said Adair is believed to have killed Judd and their 23-month-old daughter, Deja, Thursday morning in their home at 7265 Squire Road after Judd's 12-year-old twin daughters left for school. Their bodies were found about 9:15 p.m. on Thursday in the trunk of Adair's car in the parking lot of the Forest Ridge Apartment complex, 2612 Branch St.

Wosepka said he is awaiting test results before saying how they were killed.

Madison Police Noble Wray said Adair also is believed to have shot and killed another daughter, Neveah Weigel-Adair, 2, and her mother, Amber Weigel, 25, between 5:30 and 6 p.m. on Thursday. Their bodies were found by Weigel's boyfriend, Jon Butler, in a car in the garage of the home the three shared at 6827 Park Edge Drive on the city's Southwest Side, Wray said.

A motive in the deaths remains unclear.

There were paternity cases involving both of the daughters who were killed, and Adair, who had been out of work for six months, was under a court order to pay Weigel $351 a month in child support as of August.

Mahoney said Adair called his sister at 4:11 p.m. on Thursday and left an "emotional" and "somewhat remorseful" message, saying he wanted his family to know that he loved them.

Adair's mother, Rita Adair, a well-known Dane County social worker, declined comment Monday. She and other family members joined Adair's brother, Damien Sundby, on Saturday as he made a public appeal for Adair to turn himself into police.

The vehicle in which Adair's body was found had been at the Natvig Road location since Friday and it appeared that Adair had been dead for some time, Mahoney said.

Madison police spokesman Joel DeSpain said there does not appear to be any relationship between Adair and the property owner, who initially thought the vehicle belonged to a friend who occasionally parks a car on the property.

Two guns were found in the vehicle with Adair, one of which appears to be the same caliber as the gun used in the Weigel deaths, Wray said.

Wray said Adair, who was prohibited from possessing a firearm because of an active restraining order involving a third woman, purchased one of the guns, a 9mm handgun, on the online site Craigslist.

Police had advised that woman and two other women who had had restraining orders against Adair to find an alternative, safe residence after Thursday's murders, Wray said.

Dane County District Attorney Brian Blanchard said Adair had been arrested in March after a domestic incident involving Judd at their town of Middleton residence, but his office concluded there was not enough evidence to support the misdemeanor charges of disorderly conduct and intimidation of a victim sought by the Sheriff's Office.

Mahoney said a deputy believed there was probable cause to arrest Adair as mandated by state law based on statements made by children at the residence. But both Judd and Adair adamantly denied there had been a problem and neither had visible injuries, he said, adding that prosecutors must prove beyond a reasonable doubt that a crime has been committed.

Adair was charged Friday with two counts of first-degree intentional homicide in the deaths of Judd and Deja. With Adair's death, those charges will be dismissed, Blanchard said.

Blanchard said there is no evidence to suggest that anyone aided Adair.

- State Journal reporter Gena Kittner contributed to this article.

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