A man was sentenced to four years in prison Monday for obstructing justice in the April 2019 killing of a pregnant Chicago teenager whose baby was cut from her womb with a butcher knife. Court records say 44-year-old Piotr Bobak received credit for time served and will leave prison in nearly four months. He then must serve six months of probation under a plea agreement. Nineteen-year-old Marlen Ochoa-Lopez was nine months pregnant when she went to Clarisa Figueroa’s home believing she was getting free baby items after the two connected in a Facebook group. The cases against Figueroa and her daughter remain pending.