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KANSAS CITY, Kan. — A 31-year-old has now been formally charged in the murder of a KCK mother and two of her children.

The Wyandotte County District Attorney charged Ismael Caballero on Wednesday afternoon with three counts of first-degree murder and two counts of arson.

The charges stem from an early morning fire at a home on Mill Street near Central Avenue around 4:30 a.m.

The three victims were discovered inside the home by fire crews, but it wasn’t the fire that killed them.

The victims were identified as 31-year-old Yazmin Rodriguez, along with her 14-year-old daughter Amerikha and her 10-year-old son Jeancarlos.

KCK police confirmed Caballero and Rodriguez had a previous relationship.

Police arrested Caballero on Monday, and he is being held in the Wyandotte County jail. His bond is set at $1 million.