A man and woman have been charged in the death of their 2-year-old son and with injuring the woman's infant child in south Wichita. 

Patrick Javonovich, 28, and Brandi Marchant, 22, were each charged Tuesday with first-degree murder, two counts of child abuse and one count of aggravated child endangerment. 

Officers found the body of Zaiden Javonovich wrapped in a blanket in a crib Thursday night after responding to a domestic disturbance at Riverside Mobile Home Park near 47th Street South and Hydraulic. Capt. Brent Allred said he'd likely been dead for days. 

Marchant's 4-month-old son, who also had injuries, was taken to a local hospital in critical condition. Allred said Monday that he was doing much better. 

"It's shocking to see adults treating kids the way these two did," Allred said. "It's shocking is what it is."

Javonovich and Marchant remain jailed on $200,000 each. They're both due back in court on April 25. 

Police say the Department for Children and Families has been involved with the parents and these two children, but there are no police reports regarding abuse.