On Monday, a CBP agent noticed that the boy, who was apprehended with his father, “showed signs of potential illness,” CBP says, citing initial reporting.

— NBC News (@NBCNews) December 25, 2018

When the boy was evaluated for release, hospital staff found a fever and he was held for an additional 90 minutes before being released on Monday afternoon, CBP says. The boy was given prescriptions for amoxicillin, an antibiotic, and the painkiller ibuprofen.

— NBC News (@NBCNews) December 25, 2018