A powerful magnitude-8.2 earthquake struck off northern Chile on Tuesday night, setting off a small tsunami that forced evacuations along the country’s entire Pacific coast. Officials reported two deaths and several serious injuries, but the area apparently escaped major damage as landslides blocked roads, power failed for thousands, an airport was damaged and several businesses caught fire. About 300 inmates escaped from a women’s prison in the city of Iquique, and officials said Chile’s military was sending a planeload of special forces to guard against looting. An earthquake of 8.2 magnitude has struck off northern Chile, triggering a tsunami alert and sparking the evacuation of tens of thousands. The US Geological Survey said the quake was very shallow, striking 86km north-west of the mining area of Iquique. Waves of up to 2.1m (6ft) have hit some areas in Chile, and there have been power cuts, fires and landslides. Two people are reported to have died, possibly from heart attacks, and a number of people have been injured. The quake struck at 20:46 local time (23:46 GMT).