LYON, France (AP) — When about 30 padded letters destined for the United States were stuffed into a mail box at a small post office in southeastern France last week, it raised suspicions. Fearing the envelopes might contain biological agents such as anthrax, police carefully opened them and found pills sometimes taken by athletes who want to bulk up or improve their performance. The officials, speaking on condition of anonymity, said Wednesday that Interpol had opened an inquiry into the envelopes. Police did not release the names or locations of those to whom the letters were addressed. The suspiciously large...