The incident was fourth one in recent days.
At least seven children have been killed and 16 others wounded in these incidents.
Last week, one boy was killed and four others injured in a similar incident.
Also, four children were killed two weeks ago and five others injured after a missile completely destroyed their house near Sheikh Zwayed.
The military has launched frequent security raids in the area, arrested suspects and demolished houses that it says hosts terrorists, as many policemen and soldiers have been killed in the attacks, which including bombings and shootings.