including the 2010 killing of a state prosecutor, a car bombing outside a police station and a massacre at a house party that killed 15 people -- most of them students with no ties to organized crime. Acosta told authorities the targets of his criminal organization included police, government officials, rival drug gangs and civilians, Pequeno told reporters. Earlier this month, the U.S. consulate in Juarez issued a statement warning American citizens to remain vigilant based on information it had received that cartels may target the consulate or entry points on the U.S.-Mexico border. The northwestern Mexican state of Chihuahua, which contains the namesake capital city as well as Juarez, has been a hotbed for drug-related violence. The federal government has been targeting cartelsoperations, and especially its leaders, in an ongoing battle. Mexican authorities have arrested several others they accuse of being connected to the slayings of three people connected with the consulate last year. The shootings occurred March 13, 2010, when consulate employee Lesley Enriquez and her husband, Arthur Redelfs, were gunned down as they left a birthday party in their white SUV. Jorge Alberto Salcido Ceniceros, the husband of another consulate employee, was killed in a separate vehicle.