DIALLING DEATH: CHATLINE KILLER STRANGLED 3

HE may have performed sexual acts after he'd strangled them to death, but cops can only be certain of one thing - Sonny Pierce met all his victims on telephone chatlines. 
Dubbed the "Chatline Killer" the evil predator who was already in jail for raping a 15-year-old girl, allegedly met his teenage victims on singles party lines.
Then after smooth talking them into a meeting cops believe he pounced, killing Kiara Windom, 18, of Harvey; Kimika Coleman, 18, of Chicago; and Mariah Edwards, 17 before dumping their bodies. Cook County State's Attorney Anita Alavarez  said police discovered a videotape linking Pierce to Edwards' murder in July
2010. She said: "This 17-year-old girl appears to be lifeless and we believe that she was, in fact, deceased when the video was taken."
"In a very disturbing and chilling discovery, police investigating the murder cases recovered a videotape made by Pierce that pictures him engaged in violent sexual relations with Edwards."
Her body has never been found.
But Windom and Coleman's strangled bodies were discovered dumped in alleys in Blue Island and Chicago.
Orland Park Police Chief Tim McCarthy, head of the South Suburban Major Crimes Task Force, said Pierce met his victims on phone chatlines and would sexually assault them before killing them.
Investigators found 20 calls between Windom's cell phone and Pierce the night before her body was found.
They met on a singles party line in August 2009, they said.
DNA evidence linked Pierce to Windom, and video evidence refuted his alibis for the times of the crime, McCarthy said.
Evil Pierce has been in jail since August 2010 for the rape of a 15-year-old girl, who he lured into his car and then dragged her into his home, where he choked her until she passed out, then raped her.
The girl survived and reported the rape to police, who arrested Pierce shortly afterward, according to prosecutors.
Authorities said they want to hear from any potential victims who might have had contact with Pierce or from any families who believes a loved one might have been a victim. Blue Island Police have set up a hotline for information at 708-396-7020.