Casariego was kidnapped for several days by a terrorist group (right extremists from a death squad who wanted to blame Guatemalan leftist guerrilla) in March 1968.

The colonel, Julio Roberto Alpirez, has been linked to the killings of an American innkeeper and a Guatemalan guerrilla married to an American lawyer.

It was staged as the Guatemalan guerrillas and Government reached another in a series of peace accords that promise an end to a four-decade-old rebellion.

One victim was Michael DeVine, an American innkeeper, and the other was Efrain Bamaca, a Guatemalan guerrilla married to an American.

Time after time, Ms. Harbury encountered disappointment and deceit in her quest to learn the fate of her husband, a Guatemalan guerrilla who disappeared in 1992.

Before reading, Mr. Castillo said in an interview that he immigrated 11 years ago after Guatemalan guerrillas put guns to his head during fighting in 1982.

One victim was an American citizen, the other a Guatemalan guerrilla married to an American.

Ms. Harbury's husband, a Guatemalan guerrilla named Efrain Bamaca, is among those suspected of having been killed by the military.

Mr. Miranda also said that several top Sandinista officials have large private bank accounts abroad, and that the Nicaraguan Government supports Salvadoran and Guatemalan leftist guerrillas.

In return, they said, Guatemala expects Mexico to press Guatemalan guerrillas to be more flexible in the negotiations now under way to bring that war to an end.