Monica Spear and her ex-husband Thomas Berry were murdered earlier this year in Venezuela while on vacation with their young daughter.
Three more men were charged this week in the murder and robbery of the pair.
10 people have now been charged in the case.
Spear was a former beauty queen.
In the last court appearance by the accused murderers, five people appeared, reported the Latin Times: Jean Colina Alcalá (19), Alejandro Maldonado Pérez (21), Adolfo Rico Agreda (26), Leonar Marcano Lugo (32), Eva Armas Mejías (39).
Two teenagers are also suspected in the case, along with the three newly accused men: José Gregorio Ferreira Herrera (18), Franklin Daniel Cordero Álvarez (28) and Nelfrend Antonio Jiménez Álvarez (21).
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