Authorities say the younger sister of a slain Ohio woman has been charged with helping their mother dump her body.

Nineteen-year-old college student Hannah Tyburski was arrested Tuesday on charges of obstructing justice, tampering with evidence and abuse of a corpse.

The body of 26-year-old Rachele Tyburski was found March 15 near a recreation complex in Lorain County.

The girls' mother, 46-year-old Janet Tyburski, was arrested May 5 and charged with aggravated murder. Authorities say she suffocated Rachele Tyburski. She's being held on $2 million bond.

Authorities say Janet Tyburski contacted Hannah Tyburski two days after the killing in Lakewood, in suburban Cleveland, and asked for help disposing of the body.

Hannah Tyburski is free on a $7,000 bond. Her attorney calls the case a "tragic situation."