Four Hondurans living in Washington state attempted Thursday to sell enough fentanyl to potentially kill 1.6 million people to undercover agents posing as wealthy drug customers, federal prosecutors claimed Friday. Elvin Irias-Escoto, 22, and three alleged co-conspirators were arrested while reportedly trying to supply Homeland Security Investigations (HSI) agents with kilos of fentanyl powder and pills in a drug trafficking deal struck in late March, the U.S. Attorney’s Office, Western District of Washington said in a statement. Agents from the State Drug Enforcement Administration (DEA) offi…