CANTON, OHIO ? A former classmate of a man suspected of murdering a pregnant woman was arrested Sunday on a related obstruction of justice charge, the FBI said.

Myisha Ferrell was arrested one day after the body of 26-year-old Jessie Davis was found in Cuyahoga Valley National Park, still carrying her dead, nearly full-term fetus. The Summit County medical examiner on Sunday confirmed the body was Davis’.

Sheriff’s deputies and FBI agents arrested Ferrell after breaking down the door of her apartment and searching the home, agent Scott Wilson said.

The Stark County Sheriff’s Department refused to discuss the arrest, saying any information made public would hurt their case. Ferrell was to be arraigned today, Wilson said.

Davis, of Lake Township near Canton, was reported missing after her mother found Davis’ 2-year-old son, Blake, home alone, with bedroom furniture toppled and bleach spilled on the floor. Blake gave investigators some of their first clues, saying: “Mommy was crying. Mommy broke the table. Mommy’s in rug.”

Thousands of volunteers searched for Davis for several days, while investigators questioned Bobby Cutts Jr., 30, a police officer who is Davis’ boyfriend and has an estranged wife. He is scheduled to be arraigned today on charges of murdering Davis and her fetus.

Cutts, of North Canton, is Blake’s father, and relatives have said they believed Cutts also fathered the fetus Davis was carrying.