Fatemah Al-Abed's final message to her Twitter followers Sunday was harrowing and heartbreaking.
The Syrian woman's post read: "We are sure the army is capturing us now. We will see each other another day dear world. Bye. — Fatemah."
Shortly after the post, her Twitter account disappeared, NBC News reporters.
Al-Abed's dispatches from inside Eastern Aleppo have shocked and captivated readers around the world since she began tweeting from the account on behalf of her 7-year-old daughter, Bana, in September.
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The family has been documenting their struggle to survive, calling on world leaders to stop the violence and rescue Syrian children as recently as Sunday morning.