WHEELING, Ill. (AP) — Police say a child’s body found in a northwest Indiana retention pond has been identified as that of a 1-year-old suburban Chicago girl whose mother was found dead days earlier.

Indiana State Police say the body found Thursday in a Hammond pond was identified as Jaclyn Angel Dobbs of Deerfield, Illinois.

The toddler was discovered missing Tuesday after her mother, 21-year-old Ja’nya Murphy, was found dead from strangulation in her north suburban Wheeling apartment.

Missouri authorities arrested a man Thursday who is a person of interest in Murphy’s death. Police say he had a relationship with Murphy and was last seen with her Monday at a mall.