Pubdate: Sun, 18 Apr 1999 Source: Associated Press Copyright: 1999 Associated Press GREEK POLICE ON ALERT AFTER DEATHS ATHENS, Greece (AP) Drug overdoses killed six people found dead in different parts of Athens Sunday, police said. Officials believe the victims, men between 19 and 45 years old, all died after using heroin. They fear a high-purity batch of the drug could lead to more deaths. Greece and other Balkan countries are key links between western Europe and drug-producing areas in the East. More than 200 people in Greece died of heroin overdoses last year. - --- MAP posted-by: Richard Lake