Three third-graders were caught smoking marijuana in the boys' bathroom of their Sonara, California elementary school last week in what the local police chief says marked the youngest pot bust he has ever encountered. The three boys -- two 8-year-olds and one 9-year-old -- were caught last week by another student, who informed school administrators, who in turn alerted local law enforcement. Police officers detained the kids for questioning, then released them to their parents. Under California law, no one under 12 is usually charged with a crime, but the boys could be subject to juvenile justice proceedings.