Police in the United Kingdom have arrested a man following an incident where a three-year-old boy was discovered inside a crocodile enclosure at a reptile park. The circumstances surrounding how the child entered the enclosure are currently under investigation. Emergency services were called to the scene and safely removed the boy, who was unharmed. The reptile park, located in [location not specified in text], was immediately evacuated as a precaution. Authorities have confirmed the arrested individual is known to the child. The investigation is ongoing to determine the full sequence of events and whether any negligence was involved. No crocodiles were harmed during the incident.