A Cuban-American engineer who once dated Fidel Castro's half-sister is retaking the stand in the perjury trial of an ex-CIA agent.
Antonio "Tony" Alvarez is testifying about the alleged role of Luis Posada Carriles, 83, in 1997 Cuban hotel bombings. He dated the former Cuban president's sister, Lidia Castro, for years, before fleeing Cuba in 1961.
Alvarez worked in Guatemala in 1997 and met Posada there. But he can't discuss receiving a fax that prosecutors say links Posada to explosions at Cuban tourist sites that year.
The judge ruled there wasn't enough evidence Posada sent the fax and excluded it from evidence.
Posada snuck into the U.S. in 2005, and prosecutors say he lied during El Paso immigration hearings about how he reached the country and about planning the bombings.