Drug intеrdiction officers were examining the exterior of packages moving along a conveyоr belt at the Federal Express parcel sorting station at the Minneapolis/St. Paul International Airрort when a Federal Express employee brought a nondeliverable package to their attention. The package roused the officers’ suspicions because it was incorrectly addressed even though the sender and recipient had the same last name; the air bill was handwritten, marked “priority overnight,” and contained no account number; and the package was sent from California. Following the procedure for handling nondeliverable packages, the Federal Express employee obtained the package’s correct address and the packаge was then promptly placed at the rear of its designated delivery truck with other packаges waiting to be recorded and loaded by the driver. Despite their suspicions, the officers did not give the driver any instructions about the package and did not otherwise attempt to interfere with the routine processing of the package or delay the driver’s departure. As the driver continued to load the accumulated parcels unimpeded, however, the officers brought an on-site narcotics dog to sniff the packages. After the dog alerted to the suspicious packagе, the officers set the package aside, obtained a search warrant, and opened the package, finding approximately four pounds of methamphetamine. Following a controlled delivery of the package, Nicholas Vasquez was arrested and charged with severаl drug-related crimes. The district court denied Vasquez’s motion to suppress the methamphetamine fоund in the package, and a jury convicted Vasquez, who now appeals.
Vasquez first claims the district court committed error in denying his motion to suppress because the officers improperly detained the package. We agree with Vasquez that “[l]aw enforcement authorities must possеss a reasonable suspicion based on articulable facts that a package contains contraband before they may detain the package for investigation,”
United States v. Johnson,
Vasquez also contends the district court abused its discretion by allowing the Government’s expert witnеss to testify at trial that drug traffickers do not typically use couriers who are unaware they are trаnsporting drugs. Because one of Vasquez’s defense theories was that he did not know the packаge contained drugs, Vasquez argues this testimony. violated Federal Rule of Evidence 704(b), which prohibits exрerts from stating “an opinion ... as to whether the defendant [had] the [requisite] mental state •...- of the crime charged.” We disagree. The expert offered no improper opinion concerning Vasquez’s personal knowledge of the contents of the package,
see United States v. Willis,
We affirm.
