China said on Wednesday that the U.S. has undermined bilateral counter-narcotics cooperation by imposing tariffs on Chinese goods over fentanyl, calling on Washington to stop using the issue as a bargaining chip to "blackmail" the country.

China is willing to do more to address U.S. concerns about illicit fentanyl trade, an official from the Ministry of Foreign Affairs told reporters Wednesday.

A Long Island man was arraigned Wednesday on drugs, weapons and dogfighting charges. Kevin Brown, 39, pleaded not guilty and is due back in court April 30. If convicted, he faces up to 15 years in prison.

Kevin Brown pleaded not guilty to dozens of charges of drug and gun possession and keeping seven fighting dogs in squalid conditions.

Lopez said the operation seized 1.3 kilograms of fentanyl along with cash, weapons, vehicles, marijuana and cocaine

It is one of the largest drug busts in Osceola County history. Over 1,300 grams of fentanyl was taken off the streets during the "My Brother's Keeper" operation, according to the sheriff. Deputies arrested 26 people on drug trafficking charges and more arrests are expected.

Osceola County Sheriff Marcos Lopez says they have arrested 26 people in one of the "largest fentanyl busts ever" in the area. Lopez said the three-month-long investigation was called "My Brother's Keeper.