Children in Amber Alert died of asphyxiation; Body of a man also found

ELKHART, Ind. -- Elkhart police say autopsies on a young girl and boy found dead in the northern Indiana city have determined that they are the children of a woman facing preliminary murder charges in their deaths.

Elkhart police Sgt. Chris Snyder says the autopsies conducted Tuesday also determined that 7-year-old Liliana Hernandez and 6-year-old Rene Pasztor died of asphyxiation and their deaths were homicides.

Police arrested 29-year-old Amber Pasztor of Fort Wayne on Monday on two preliminary murder counts after the children's bodies were found in her car in Elkhart.

Prosecutors are expected to formally charge her in the case later this week.

Elkhart County Prosecutor Curtis Hill says the deaths are "a senseless tragedy."

Hill appeared at a news conference Tuesday afternoon with Allen County Prosecutor Karen Richards in Fort Wayne.

Prosecutors say Pasztor is cooperating with authorities and has provided helpful information in the investigation of a neighbor's shooting death.

Richards says Amber Pasztor had been driving a car belonging to 65-year-old Frank Macomber. His body was found Tuesday morning in woods north of Fort Wayne.  Senior investigator Rebecca Stuttle of the Allen County coroner's office says Macomber died from a gunshot wound. His death has been ruled a homicide.

No charges have been filed in Macomber's death.