Police say a three-year-old boy died after he apparently crawled through a gap in a fence and fell into a swimming pool this morning. The accident occurred at an apartment complex in Clermont County, about 15 miles east of Cincinnati. Union Township police said the boy was found face down in the pool at Clough (cluff) Corner Apartments and could not be revived. He was pronounced dead at a hospital. Police did not immediately release his name. The apartment's management said it is cooperating with the police to determine how the accident occurred.