It's not just heroin that's the problem in a string of heroin overdoses in the Akron area.

NewsChannel 5 reports that police believe that heroin laced with carfentanil - an animal tranquilizer - is responsible for more deadly overdoses.

88 overdoses in the city of Akron in the past 10 days have killed 8 people. The powerful animal anesthetic is being linked to two of the deaths, on Akron's Copley Road and in New Franklin.

The drug is so new to police, that Akron and Cleveland police have visited the Cleveland Zoo, where it's used on large animals such as elephants.

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