An employee with the mayor's office watches as an excavator is used to demolish a building damaged during an earthquake in 1972, which has been declared unsafe after an earthquake of magnitude 6.6, in Managua April 11, 2014. The strong earthquake hit southwest Nicaragua on Friday, the second in as many days, shaking buildings in the capital Managua and as far away as San Jose in Costa Rica, but there were no immediate reports of damage. REUTERS/Oswaldo Rivas (NICARAGUA - Tags: DISASTER POLITICS)