Woman kills baby for interrupting her Facebook session

Miami: A north Florida mother has pleaded guilty to shaking her baby to death after the boy's crying interrupted her game on Facebook.

Alexandra V. Tobias pleaded guilty to second-degree murder on Wednesday and remains jailed.

The Florida Times-Union reports that she told investigators she was angered because the three-month-old boy was crying while she was playing the game FarmVille.

The paper also reports that she told investigators she shook the boy, smoked a cigarette to compose herself and then shook him again.

She will be sentenced in December. State guidelines call for 25 to 50 years, but a prosecutor said it could be shorter than that.

FarmVille-maker Zynga has not released an official statement about this tragedy.