Zulma Guzman Castro, a businesswoman accused of murdering two students in Colombia with poisoned chocolate, was pulled from the River Thames in London. The British Daily Mail reported that she was retrieved from the water yesterday. Castro is suspected of killing the two students as revenge following a secret affair she had with the father of one of them. The deaths of the two girls, Ines de Bedout (14) and her close friend Emilia Porro (13), were confirmed at the hospital several days after they ate the poisoned treat.