A New Jersey woman was arrested after authorities in New York discovered 15,000 pills of “rainbow fentanyl” stuffed inside a Lego box. 

New York state drug authorities were investigating suspected drug trafficking Sept. 28 when they observed 48-year-old Latesha Bush of Trenton, New Jersey, carrying a black tote bag wrapped around a large object as she entered a vehicle in Manhattan, the U.S. Drug Enforcement Administration said Tuesday. 

Officials said officers stopped the vehicle and found Bush with two black tote bags and a Lego container in the back seat. Inside the container were brick-shaped packages covered in black type next to Lego blocks. Authorities said one of the packages was partially opened, revealing the rainbow-colored pills. 

Preliminary testing indicated the pills contained fentanyl. Further investigation revealed Bush had traveled from New Jersey in a rental car, and the pills allegedly came from Mexico, authorities said. The pills were imprinted with a “M” and “30” to resemble Oxycodone pills. 

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Officials said it was the largest fentanyl bust in New York City to date. Bush was arrested and charged with criminal possession of a controlled substance in the first and third degrees, both of which are felonies. 

“Rainbow fentanyl is a clear and present danger, and it is here in New York City,” DEA Special Agent in Charge Frank Tarentino said in a statement. 

“Rainbow fentanyl” has become an increasing concern among law enforcement agencies throughout the country, who say the colorful, candy-looking synthetic opioid – which is much stronger than morphine – is targeting young people. Busts have been reported in Arizona, Oregon, California and Washington, D.C.

But some health experts and toxicologists are viewing the rise of rainbow-colored fentanyl with caution, noting illicit drugs have featured bright colors for decades. 

Follow Jordan Mendoza on Twitter: @jordan_mendoza5.