Fire officials said a San Diego middle school was evacuated when a student's science project was mistaken for a bomb. Fire-Rescue spokesman Maurice Luque said a vice principal's concerns prompted the evacuation of Millennial Tech Magnet Middle School Friday afternoon. Luque said an arson team took photos and x-rays of the empty plastic bottle with wires and determined it was harmless.

Luque says the 11-year-old boy was trying to build a motion detector from instructions he found on the Internet and parts he bought online