Japan news 10/4

• Average age of socially withdrawn people passes 30 for first time
• Princess Aiko begins primary school
• Dalai Lama says trip to the US 'nonpolitical', supports China's hosting of Olympics
• 1,000 tulips destroyed along roads in Maebashi
• Sewing needle found in salad sold at supermarket
• Four death row inmates executed
• Cops collar knife-wielding teen planning random murder
• Fire at power substation near Kokubunji Station causes mayhem on Chuo Line
• Swiss woman's acquittal of smuggling stimulants into Japan upheld
• Laborer arrested for attempted murder 1 year before statute of limitations runs out
• Diet stalemate over BOJ governor appointment finally comes to an end