FLINT (WWJ) – The Genessee County Sheriff’s Department has launched a program of running drug checkpoints on highways around Flint.

WWJ’s Rob Sanford reports the Genessee County Sheriff’s Department will set up a narcotics checkpoint along I-69 and US-23 about seven times a month.

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Once stopped, cars will be searched if drug dogs sniff out something suspicious. If motorists pull a U-turn to avoid the checkpoint, police cruisers will be on hand to pull them over and search their vehicles.

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Genesee County Sheriff Robert Pickell told the Free Press that Flint is a crossroads of drug dealing and he decided to try checkpoints.

But the American Civil Liberties Union and several constitutional law experts say checkpoints aren’t legal, pointing to a number of court decisions on the issue.

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County Prosecutor David Leyton said he can’t stop the sheriff unless someone who is arrested at one of the checkpoints challenges the evidence in court.