Former Argentine spy chief summoned in case of dead prosecutor: reports

By Sarah Marsh and Richard Lough BUENOS AIRES (Reuters) - Argentine investigators summoned a former spy chief for questioning over the death of a state prosecutor who alleged the country's president had tried to cover up his investigation into the 1994 bombing of a Jewish center, Argentine media reported. Alberto Nisman was found dead in his flat on Jan. 18, a day before he was due to testify about his claim that President Cristina Fernandez tried to whitewash his findings that Iran was beh