the institute ' s breakthrough came about after it set out to uncover fri ' s belief that an octagonal tomb in the remains of the ancient citadel of ephesus hosted the body of arsinoe . according to roman mythology the city , in what is now italy , is where arsinoe was banished after being defeated in a power struggle against cleopatra and her then lover , julius caesar . arsinoe was said to have been murdered after rome , now with mark anthony following caesar ' s demise , ordered the roman general to have her youngest sibling killed to halt any future attempt on the egyptian throne .
Queen Cleopatra ordered the assassination of her sister.