A magnitude 5.1 earthquake struck Colombia on Wednesday, with its epicentre in Los Santos in the Santander department (a region in the country's northeast), sending tremors across several cities including the capital, Bogotá, and nearby Bucaramanga. Alarms sounded in Bogotá and buildings were evacuated, while authorities in Bucaramanga ordered preventive evacuations as a precaution; no casualties or structural damage have been reported. The quake comes just over two weeks after a far more destructive 7.4-magnitude earthquake killed more than 300 people in Colombia, heightening public sensitivity to seismic activity in the country.