A seven-year-old Guatemalan girl died "of dehydration and shock" after she illegally crossed into the United States with her father and was taken into custody by U.S. Customs and Border Protection, the Washington Post reports.

Details: The girl and her dad were taken into custody on Dec. 6 in New Mexico, and more than eight hours later she began having seizures. Her body temperature was 105.7 degrees, the Post reports, and CBP told the Post she "reportedly had not eaten or consumed water for several days." CBP spokesman Andrew Meehan told the Post that border agents "took every possible step to save the child's life under the most trying of circumstances."