ELKHART, Ind. (AP): A court hearing is scheduled for a northern Indiana woman accused in the deaths of her two young children.

Prosecutors in Elkhart County say the probable cause hearing is expected to be Wednesday for 29-year-old Amber Pasztor of Fort Wayne. Siblings 7-year-old Liliana Hernandez and 6-year-old Rene Pasztor were found asphyxiated Monday afternoon in a car in Elkhart after an Amber Alert was issued saying they were in “extreme danger.”

Elkhart County Prosecutor Curtis Hill said Amber Pasztor faces two preliminary murder counts. He said formal charges were to be filed later this week.

Pasztor did not have custody of her children. She was being held in the Elkhart County Jail. It wasn’t immediately clear whether she had an attorney who could comment on her behalf.