 The progress against drug cartels in Mexico has been hindered by bribery, intimidation, and corruption; four months later the General was relieved of his command.On April 26, 2008, a major battle took place between members of the Tijuana and Sinaloa cartels in the city of Tijuana, Baja California, that left 17 people dead.In March 2009, President Calderón called in an additional 5,000 Mexican Army troops to Ciudad Juárez.