FAIRVIEW HEIGHTS • Fairview Heights police have investigated three heroin overdoses, one of them fatal, within 12 hours, and said there was no evidence as of Friday evening linking them together.

The first incident happened at about 3:45 a.m. Friday in the 9800 block of Old Lincoln Trail. A woman, 22, was on the floor of the home and was not breathing. Officers began chest compressions until the ambulance arrived, but she was pronounced dead at a hospital.

At 11:30 a.m., officers went to a home on Kassing Drive to tend to another woman, 19, who was not breathing. An ambulance crew revived her with the drug naloxone, often referred to by the brand name Narcan, and she was awake and coherent.

AT 2:55 p.m., officers went to the 10800 block of Lincoln Trail for another woman, 27, who was in a restroom, unconscious, with labored breathing. Officers gave her oxygen and she slowly awoke, and an ambulance arrived to monitor her as she was awake and talking.

Fairview Heights police continue to investigate and are asking anyone with information to call them at 618-489-2130.