San Francisco’s ongoing battle against drug trafficking saw a significant development as two suspects were slapped with a litany of serious charges. Mario Sevilla-Artiaga, 26, was arraigned on March 26, entering a plea of not guilty to multiple counts of possession for sale of narcotics, including fentanyl and heroin. His co-defendant, Angela Otis, 37, is scheduled to step before the judge on March 28. The charges leveled at the duo, detailed in a press release from the District Attorney’s Office, alleging they intended to sell controlled substances, ranging from heroin to alprazolam.