Bana Alabed, the brave 7-year-old girl who has been tweeting from war-torn Aleppo in Syria, is no longer on Twitter.Since September, Bana has been offering a heart-rending insight into daily life in the besieged Syrian city through an account run with her mother, Fatemah.Sadly, the BBC now reports that the account was deleted yesterday. Its final tweet read: "We are sure the army is capturing us now. We will see each other another day dear world. Bye. - Fatemah."The whereabouts of Bana and her mother, a teacher, are currently unknown. According to the BBC , army troops have recently pushed into eastern Aleppo, the area of the city where the family lives.Bana's Twitter account — often harrowing, always hopeful — had amassed more than 100,000 followers before it was deleted. In one especially powerful tweet, Bana shared a picture of a house that had been reduced to rubble. Her caption read: "This is my friend house bombed, she's killed. I miss her so much."J.K. Rowling was so moved by Bana's unfailing passion for reading amidst the chaos that surrounded her that she recently arranged for e-books to be sent to the 7-year-old Earlier today the Harry Potter author retweeted a tweet featuring the #WhereIsBana hashtag that people concerned for the 7-year-old are now using on Twitter.