Authorities are investigating death threats posted on the Internet against UN General Assembly President Miguel d'Escoto Brockmann, his spokesman acknowledged Monday. The spokesman, Enrique Yeves, did not identify the bloggers or their specific threats against D'Escoto. He revealed the threats, which he said occurred within the past week, during a series of complaints about the Israelis, but he later denied there was any connection. The threats are being taken seriously by UN security officials, who have called in US authorities for help in investigating, Yeves said. "Very serious threats have appeared on the Internet against the life of the president of the General Assembly. This matter is being looked into by the pertinent authorities," he said.