A batch of illicit drugs that was mixed with fentanyl and other substances may have been the cause of a mass overdose in.

Federal scientists from the National Institute of Standards and Technology have identified a combination of substances believed to be responsible for last week’s mass overdose in Baltimore’s Penn North neighborhood.

Baltimore City Police reported another series of overdoses in the Penn North area early Friday morning, less than a week after a mass overdose incident in the same neighborhood. According to officials