MEXICO CITY (Reuters) -Mexican security forces said on Wednesday they had made the largest fentanyl seizure in the country's history, impounding 1,100 kilograms of the synthetic opioid in the state of Sinaloa.

The raids came after a sharp drop in fentanyl seizures in Mexico earlier this year, and days after U.S. President-elect Donald Trump threatened to impose 25% tariffs on products from Canada and Mexico unless those countries cracked down on the flow of migrants and drugs across the border.