Man arrested trying to climb wall at Buckingham Palace

British police on Monday said they had arrested a man who triedto climb a wall at Queen Elizabeth's Buckingham Palace home in central London, but said that the incident was not terrorism-related.The 24-year-old man was arrested on suspicion of trespass on Sunday evening, three minutes after he stepped over a low outer perimeter fence near the palace, the Metropolitan Police said.British police are on high alert after five attacks blamed on terrorism this year.