Confirmation of third child killed by Hamas rocket last November?

The UN just released their annual report on Children and Armed Conflict.

This sentence concerning Pillar of Defense was interesting (paragraph 110):

In three other incidents, Palestinian children were allegedly killed by Palestinian rockets aimed at Israel that fell short and landed in Gaza.

In March, a different UN report only mentioned 2 incidents of children killed by terrorist rockets that fell short:

On 14 November, a woman, her 11-month-old infant, and an 18-year-old adult in Al-Zaitoun were killed by what appeared to be a Palestinian rocket that fell short of Israel. In addition, OHCHR received reports related to an incident in which two civilians, including a child, were killed, and five persons, including three children, were injured, as a result of what appeared to be a Palestinian rocket that fell short and hit a house in Al-Quds Street, near Khilla Gas Station, Jabalya, on 16 November.

So who was the third, even if only "allegedly"?

My guess, as I've mentioned previously, is Iyad Abu Khusah, an 18-month old boy who B'Tselem said was killed by an Israeli airstrike:

On the morning of 18 November 2012, at around 8:00 AM, an Israeli plane fired into the courtyard. One-and-a-half-year-old Iyad Abu Khusah was killed by shrapnel that hit him in the head. Shrapnel hit his six-year-old brother Suhaib in the face and neck. His four-year-old cousin Sarah was hit by shrapnel in the abdomen and the lower torso.

However, unlike other reports of airstrikes killing civilians that B'tselem asked the IDF to verify, in this case the IDF flatly denied that there was any airstrike whatsoever:

I never saw anyone else putting the pieces together to assume that Abu Khusah was killed by a Hamas rocket the way I did - until this new UN report.

Either the UN is reading my blog and thinking it is authoritative enough to raise the possibility that Abu Khusah was killed by a rocket that fell short (unlikely), or someone else I am not aware of has also reached that conclusion. (Or there is another child I have not heard about that the UN didn't bother to publicize.)