Tamaulipas: Matamoros, Nuevo Laredo, Reynosa, and Tampico are major cities/travel destinations in Tamaulipas - Defer non-essential travel to the state of Tamaulipas. All U.S. government employees are prohibited from personal travel to all but the central zones of Matamoros and Nuevo Laredo and on Tamaulipas highways outside of Matamoros, Reynosa, and Nuevo Laredo due to the risks posed by armed robbery and carjacking, particularly along the northern border. While no highway routes through Tamaulipas are considered safe, the highways between Matamoros-Ciudad Victoria, Reynosa-Ciudad Victoria, Ciudad Victoria-Tampico, Monterrey-Nuevo Laredo, and Monterrey-Reynosa, are more prone to criminal activity. Public and private passenger buses traveling through Tamaulipas are sometimes targeted by organized criminal groups. These groups sometimes take all passengers hostage and demand ransom payments. In Tamaulipas, U.S. government employees are subject to movement restrictions and a curfew between midnight and 6 a.m. Matamoros, Reynosa, Nuevo Laredo, and Ciudad Victoria have experienced numerous gun battles and attacks with explosive devices in the past year. Violent conflicts between rival criminal elements and/or the Mexican military can occur in all parts of the region and at all times of the day. The number of reported kidnappings for Tamaulipas is among the highest in Mexico, and the number of U.S. citizens reported to the consulates in Matamoros and Nuevo Laredo as being kidnapped, abducted, or disappearing involuntarily in 2014 has also increased.