PITTSBURGH, PA (11:35 a.m) —The initial investigation into the Southside medical incident suggests this was a drug-related overdose.

The victims -- including three people who died and four who remain hospitalized -- appear to have been at the same venue together, and then to have gone to a second location at a private residence where they apparently overdosed on drugs. The victims all took the narcotics at the same time and in the same location. 

To be clear, this was not a case of a tainted drug being passed around or distributed in large volume at a large venue which could have affected even more people. It appears to have been isolated to a single location.

However, police are concerned about a tainted, potentially deadly batch of drugs in the community. We remind the public not to use drugs. Simply put: You do not know what's in that drug.

Regarding the orange wristbands: Police identified multiple venues in the city that used orange wristbands last night for events and concerts. News reports linking this incident to specific venues are incorrect.

Anyone who attended one of these events has no cause for concern regarding their health.

Public Safety would like to thank the media and public for helping us quickly disseminate information, and for calling in countless tips. 

Additional updates will be released when available.