Boy kills teacher, self in Mexico school shooting

Torreón (Mexico) (AFP) - An 11-year-old boy shot and killed his teacher Friday at a school in northern Mexico and wounded six other people before killing himself, authorities said.As shocked Mexicans searched for explanations for the school shooting -- a rare event for the country -- officials said they were investigating a possible link to the Columbine High School massacre in the US in 1999.Panicked parents rushed to the private elementary school, the Colegio Cervantes, in Torreon as of