(CBS) — Police in Merrillville say a man murdered his mother while she was in the hospital.

Police say 60-year-old Rodney Louis Dickinson stabbed his mother to death in Methodist Hospital, prompting the institution to go on lockdown Friday morning.

80-year-old Margarine Haywood died in the hospital. Dickinson is charged with her murder.

Her 88-year-old husband was found dead in their Gary home. So far, no charges have been filed in his death.

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