http://www.bbc.co.uk/news/world-us-canada-14564571 A "potentially catastrophic" bomb plot hatched by an expelled high-school student has been foiled by police in the US city of Tampa, Florida. Police said Jared Cano, 17, planned to lay a device at Freedom High School in north Tampa and detonate it as students began the new school year. Fuel, shrapnel, plastic tubing and timing and fusing devices were found at his home, a police chief said. Jane Castor said the plot was of a scale never before seen in Tampa. Mr Cano, who had been expelled from the school, was hoping to kill or injure more people than the 1999 shooting by two students at Columbine High School in Colorado, Ms Castor said.