Mexican authorities have fired almost 25 percent of all traffic police in the city of Monterrey for failing corruption and competence tests.

As the Mexican government suspected many policemen to have links to organized crime, it stepped forward to clean up its police forces.

In Oct, all 1,142 traffic cops in the city were pulled off durty for 10 days to undergo medical, mental aptitude and drug tests.

Mayor Fernando Larrazabal informed on Tuesday that 276 officers have been fired for failing the exams, 526 officers who performed poorly were ordered to undergo more training, and the rest 340 policemen were determined fit for the job.

All this took place in a response to the complaint of the residents of Monterrey, which is one of Mexico’s wealthiest cities, that the local police are not up to the job, and in some cases are working in league with organized crime and drug cartels.