An earthquakes of 5.3 magnitude shook Bolivia early today. According to the US Geological Survey, the tremor hit 75 kilometres west-northwest of Santa Cruz, Bolivia's largest city, at 5:23 am local time with a depth of 10 kilometres. Another quake of magnitude 5.2 struck nearby 17 minutes later, 140 kilometres northwest of Santa Cruz. However, there were no immediate reports of casualties or damage.<br/>