Police and fire responded to a neighborhood "in reference to multiple individuals experiencing overdose symptoms".

Naloxone, the opioid overdose-reversing medication commonly known by its brand name Narcan, was central to the response of a mass overdose event in Baltimore Thursday. The city, as part of its sweeping harm reduction efforts already in place,

An unusually large number of overdoses sent crews searching alleys and homes for victims. Officials have not said what type of drug was involved.