A mother was convicted Friday of killing her month-old daughter by burning her in a microwave oven, with jurors rejecting a defense attorney's claims there was evidence that someone else was responsible.

China Arnold, 28, showed no reaction when the jury's verdict was announced and then lowered her head, looking down at the defense table. Relatives in the courtroom cried and covered their faces with their hands. They later left the courthouse without commenting.

Arnold was found guilty of aggravated murder and could be sentenced to death. The jury was scheduled to return Tuesday to begin hearing evidence in the death-penalty phase of the case.

Arnold was accused of killing daughter Paris Talley in 2005. A judge declared a mistrial in February, and the retrial began Aug. 18. Jury deliberations started Thursday following closing arguments. More