Lina Medina, from the Ticrapo District of Peru, gave birth by cesarean section in Lima at age 5 1⁄2. The infant was a 2.64 kg (5.8 lb), 47.5 cm (18.7 in) boy named Gerardo. Medina’s parents, who assumed their daughter had a tumor, took her to a hospital in late March, where she then was found to be 7 months pregnant. By interrogating her parents, the doctors understood that Medina had entered into precocious puberty (when hormone glands are activated earlier than normal) very early after her birth. Although Medina’s father was arrested on suspicion of sexual abuse, he was later released due to lack of evidence, and the baby’s biological father was never identified.