The FBI is offering a $20,000 reward for information leading to the whereabouts of Maria del Carmen Lopez, a 63-year-old US and Mexican citizen who was kidnapped from her home in Mexico on February 9. The Colima Attorney General's office is working with the FBI on the investigation, and the public is being asked to be aware of any suspicious activity that may be related to the case. The kidnapping is the latest in a series of violent incidents involving Americans in Mexico, prompting the US State Department to issue a travel advisory warning US citizens to exercise increased caution when traveling to Mexico.