Medical students have reportedly cut a newborn's penis while trying to sever his umbilical cord.
The undergraduates made the shocking blunder in the delivery room in the City of Saltillo in the state of Coahuila, north-eastern Mexico, The Sun reported. They then tried to hide the boy from his parents.
The child's father Diego Rangel Izaguirre grew suspicious when he was denied access to his son for more than two hours after his birth. He was told that his son had suffered a minor injury and would need surgery.
"When my child was born and they cut his umbilical cord they injured his penis," he said.
"And unfortunately when the surgeon started sewing it, he made other two new injuries, almost two centimetres deep."
The baby's mother, Zulem Contreras, said: "This shouldn't have happened, they should have assigned a gynaecologist to take care of him, not students."
The couple have made an official complaint but hospital officials claim the newborn is healthy and that the operation was both minor and the baby's parents gave their consent.
"According to the information available at the moment, during the labour, when cutting the umbilical cord, the foreskin was injured. It was corrected with the usual procedure of circumcision to the minor," the Mexican Institute of Social Security said.