A Mercedes man faces federal charges after prosecutors say he sold fentanyl that led to someone's death.

A federal judge ordered 28-year-old Bryan Alexis Cedillo to be held in custody pending further proceedings.

Prosecutors told the court Cedillo sold narcotics that caused a fatal overdose. They also presented information alleging Cedillo continued selling narcotics after he learned of the victim's death, according to a news release.

An indictment alleges Cedillo possessed fentanyl with intent to deliver and that the drugs resulted in death.

If convicted, Cedillo faces a mandatory minimum of 20 years and up to life in federal prison. He could also face a fine of up to $1 million.

The Weslaco Police Department led the investigation with help from Immigration and Customs Enforcement Homeland Security Investigations.