A baby sock with bundles of heroin was found on a jail inmate Friday after a tip led to a security shakedown, the Suffolk County Sheriff's office said.

The 10 bundles contained 99 packets, each at the street sale weight of 35 milligrams, and were packed away in the genital area of Christopher Cokbilen, 27, who was arrested Wednesday on a charge of third-degree criminal sale of a controlled substance, said Michael Sharkey, chief of staff for Sheriff Vincent F. DeMarco. Cokbilen was arraigned Thursday.

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Each cellophane bundle was postage sized, Sharkey said, and jail officials think Cokbilen had them when he was arrested and patted down by police and corrections officers.

"It's difficult to differentiate between what's a person and what's not" during a pat down, Sharkey said.

Strip-searches, however, are barred in the state unless a reason can be documented, he said.

The heroin tip was developed by correction officer investigator Marcos Franco, authorities said.

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Cokbilen also now faces first-degree promoting prison contraband, a felony, and seventh-degree criminal possession of a controlled substance, a misdemeanor.