“Mexico’s transparency watchdog denied an appeal to release autopsy reports on 42 suspects killed by federal police in a gunbattle last year, backing the government’s position with a decision that drew criticism from human rights groups Wednesday. One police officer died in what authorities described as a clash with drug cartel suspects in the western state of Michoacan on May 22, but the lopsided 42-1 death toll drew suspicion.”
Source: Mexico Seals Records in Lopsided Shootout That Killed 42 – ABC News