Federal agents arrested a truck driver in Morristown last Wednesday after finding roughly 44 pounds of cocaine and heroin when they stopped the tractor-trailer he was driving, according to documents filed in federal court in Newark.

The criminal complaint filed in U.S. District Court provides only limited information on the arrest of Alejandro Roberto Hernandez, but reveals investigators had stopped the truck as part of an investigation into a drug trafficking organization that was “shipping narcotics via tractor-trailer."

Law enforcement officers conducting surveillance Wednesday stopped the truck after Hernandez engaged in what they described as “counter-surveillance techniques,” a Drug Enforcement Administration agent wrote in the complaint.

After Hernandez gave investigators permission to search the tractor-trailer, investigators found approximately 33 pounds of cocaine and 11 pounds of heroin “packaged in a manner consistent with narcotics,” the affidavit says.

Hernandez, who is represented by the Federal Public Defender’s Office, made his first appearance Wednesday before Magistrate Judge Michael A. Hammer. Hammer ordered Hernandez — who waived his right to a preliminary hearing — remain jailed pending further proceedings, records show.

Thomas Moriarty may be reached at tmoriarty@njadvancemedia.com. Follow him on Twitter @ThomasDMoriarty. Find NJ.com on Facebook.

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