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 said it has forcefully cracked down on the fentanyl trade and condemned President Donald Trump’s tariffs, as the world’s two largest economies remain at odds over the conditions for any talks to cool tensions.

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.

Authorities are looking into the possibility that a child who died in Oroville recently was exposed to fentanyl.

On Tuesday, Folsom detectives sought a second murder charge against Taylor in connection to Fatooh’s death. The Sacramento County Coroner’s Office said the victim died of a fentanyl intoxication and acetyl fentanyl toxicity.

A toddler who died may have been exposed to fentanyl, the Oroville Police Department said Tuesday. Dispatchers at 7:40 p.m. Sunday got a "frantic" 911 call from a person reporting an unresponsive child, the police department said. Officers had limited information to work with because of how distressed the caller was.