Additional Charges were filed against the Holt Missouri couple charged in the death of a four-year-old boy.

The Missouri Highway Patrol says 34-year-old Justin Webb and 32-year-old Melissa Webb were charged Thursday with Class B Felony Child Abuse.

Justin is the father of four-year-old Lucas Webb who was pronounced dead at a hospital Monday.  Melissa is the child’s stepmother. She allegedly called 911 Monday afternoon. Emergency personnel found the child unresponsive.

An investigation by the major case squad found the child was killed by blunt force trauma. An autopsy found the child had broken ribs for at least six weeks before his death. The two were arrested Wednesday and charged with murder Thursday morning.

The two charged remain in jail on a $500,000 bond each.  They will appear in court later this month.