PEORIA, AZ -- Two Arizona motorists died Monday after an 18-year-old woman apparently became distracted by text-messaging on her cell-phone while driving and crashed her car. Peoria Police say the deadly head-crash happened about 3:30 p.m when the teenage driver drifted across the center line. Investigators believe the driver was text-messaging on her cell phone immediately prior to the collision. Authorities made that determination while checking her cell phone for emergency contact numbers During that search they found a text message that was sent at 3:31 p.m., the same time as the head-on crash. The death of the young woman and the other victim, a 40-year-old woman, serve as a tragic reminder that operating a motor vehicle requires 100 percent of a motorist's attention, said Mike Tellef, a Peoria police spokesman. Drivers should never send text messages on cell phones, or any other device, while behind the wheel, Tellef said