Human rights groups in Sweden have planned a demonstration outside the Argentine embassy in Stockholm later today to demand the retrial of army officers involved in the country's dirty war.

The protest ,organized by Amnesty International, a group of children of those missing in Argentina and exiles living in Sweden called Hijos, coincides with a visit to Sweden of the Argentine president, Carlos Menem.

President Menem said in Stockholm on Tuesday he would try to find out what happened to a Swedish teenager, Dagmar Hagelin, who disappeared in Argentina twenty-one years ago.

Her father, Ragmar Hagelin, told the BBC he would fight to get justice on her daughter's case.