The police also urge users to call authorities immediately if someone tries to extort money from you.

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Public buses in Honduras are frequently attacked by gangs who rob passengers and extort money from drivers.

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"The not-so-subtle insinuation that Ms. Kelley attempted to extort money from your clients is unfounded and reprehensible, " DePrimo responded.

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It's about the phenomenon of expressed kidnappings, where someone is grabbed for a short period of time in order to extort money from them or their families.

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In court arguments, Cisneros's attorneys, Brendan Sullivan and Barry Simon, argued the tapes were not admissible because they were made in an illegal attempt to extort money from Cisneros.

CNN: Ted Barrett/

Detectives also investigated Gibson's charge that Grigorieva, a Russian musician, tried to extort money from him with recordings she made of his telephone calls, a Los Angeles County sheriff's spokesman said.

CNN: STORY HIGHLIGHTS