A Tucson woman accused in a 2012 killing has pleaded guilty to manslaughter.

Ashley Marie Antone was accused of stabbing and killing Kaitlin Chico in May 2012.

Antone and boyfriend Emmanuel Arie Rivera were driving in a car with Chico when motorists called 911 to report seeing the three fighting.

Responding police located the car, driven by Emmanuel, and followed it. Other officers located Chico's body in a neighborhood alley from where the car was seen fleeing.

Antone was originally charged with second-degree murder. She's scheduled for sentencing on June 23.

Contact reporter Patrick McNamara at 573-4241 or pmcnamara@azstarnet.com. On Twitter @pm929.