Puerto Rican Boxer Charged In Murder

A man has been charged by a federal court for kidnapping and killing a pregnant woman in Puerto Rico. He was arrested for the murder of a 27-year-old woman. The US Attorney's office has charged him with kidnapping, carjacking resulting in death, and intentionally killing an unborn child. If convicted, he may face the death penalty.

In which location was the accused arrested?

What specific crime was committed against the unborn child?