From the Chicago Tribune:
More than 70 people have overdosed from dangerous batches of narcotics -- apparently heroin laced with the painkiller fentanyl -- on the West Side since Tuesday, according to city health and fire officials.
Emergency crews have responded to 74 cases over 72 hours, according to Larry Langford, spokesman for the Chicago Fire Department. "It’s up significantly," he said.
An alert from the Chicago Department of Public Health and obtained by the Chicago Tribune said the drugs were bought at two locations on the West Side. A sample of heroin recovered by Chicago police may have contained fentanyl, authorities said.
Police are looking into whether a man who died of an apparent drug overdose in the East Garfield Park neighborhood had ingested narcotics from the dangerous batch, according to law enforcement sources.