Three suspects have confessed to being involved in the Minsk subway bombing in Belarus. The authorities have rounded up dissidents across the country after the president declared that they might know who ordered the attack. The head of the KGB, Belarus' security service, said a man in his mid-20s was arrested and confessed to carrying out the bombing that killed 12 people and wounded over 200 on Monday at the main subway station in capital Minsk. Two other suspects have also confessed to being involved in the subway attack.