(PROSPECT HEIGHTS) Emergency crews used a heroin antidote to save a driver who caused a crash that injured himself and another person Sunday afternoon in northwest suburban Prospect Heights, police said.

The 31-year-old man was eastbound on Palatine Road when he rear-ended another car near Milwaukee Avenue shortly after noon, according to Prospect Heights police.

Officers and other motorists pulled the man from the car when they found that he had stopped breathing, police said. Items in his car led officers “to suspect illegal narcotics use,” and paramedics injected Narcan (naloxone), which can reverse the effects of an opioid overdose, police said.

The man was stabilized and taken to Lutheran General Hospital in Park Ridge, police said. A 62-year-old person Wheeling resident in the other car was treated for minor injuries and released from another hospital.

The 31-year-old later admitted to injecting heroin before driving, police said. He was expected to be charged with DUI.