Ohio prison officials say they are concerned with the relatively high percentage of inmates who tested positive for drugs recently.
An annual test in October by the Ohio Department of Rehabilitation and Correction found 3.32 percent testing positive for drugs including: marijuana, opiates, cocaine and alcohol.
Reports say that the rate in nearly twice as high in 2011 when 1.74 percent of those tested had drugs in their system.
It is the highest since the state began random drug testing of inmates in the early 1990's.
Officials say most of the drugs are coming in over walls and fences, tossed into prison yards from the outside.
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