The Sri Lankan government traded charges with Tiger rebels over the killing of 13 Tamil civilians at the weekend, amid escalating violence in the restive northern region. Another bomb went off in the northern peninsula of Jaffna on Monday but there were no casualties, military officials said. Security had been stepped up in the area following the weekend bloodshed. The government said it “strongly condemned” the Saturday night murder of Tamils in the navy-controlled islet of Kayts and pointed a finger at the rebel Liberation Tigers of Tamil Eelam (LTTE). Full Story