Cops Implicated In Mass Murders 2:42 am PST, 30 January 2004 Thirteen Mexican police officers have been arrested and flown to Mexico City in connection with the killings of 11 men found in a mass grave in the northern border city of Juarez. But the attorney general, Rafael Macedo de la Concha, is already conceding that four other officers, including State Police Commander, Migual Angel Loya, are fugitives from justice. Mr. Loya failed to show up for work on Monday, and has not been seen since. Mexican authorities estimate the killings happened about a year ago, and say they are...