Four US citizens were kidnapped in Matamoros, a city in northeast Mexico, on Friday. A Mexican citizen was killed during the incident. The group had crossed into Mexico from North Carolina to buy medicines when they were attacked by unidentified gunmen shortly after crossing the border. The Americans were then taken away by the gunmen. Mexican President Andrés Manuel López Obrador confirmed the abduction and said that the entire government was working on finding their location. The US ambassador to Mexico, Ken Salazar, has announced that several US law enforcement agencies are collaborating with Mexican authorities. The FBI is offering a $50,000 reward for information on the victims and their captors. Matamoros has witnessed several incidents of violence linked to drug trafficking and other forms of organized crime. Tamaulipas, the state where the city is located, is considered to have some of the most dangerous roads in Mexico, and for several months, the US government has maintained an alert, advising citizens not to travel to the region due to kidnappings and other crimes. Consulate staff are prohibited from traveling on the region’s back roads.