The victim in the September 26 stabbing, 29-year-old Yessica Ruiz, has succumb to her injuries.
Zacarias Salas-Rufino is charged with criminal homicide and criminal impersonation.
Ruiz was found outside a home in the 3200 block of Navajo Drive about 7 a.m. Monday morning, September 26, on a report of a person suffering from stab wounds, according to Chattanooga police.
She was taken to a local hospital by Hamilton County Emergency Services.
Police originally charged Carlos Delposo with attempted murder and aggravated domestic assault.