Device, which resembles RPG, is discovered by security staff at local education center, defused by police

Police sappers dispatched to 2 localities to deal with suspected devices; one object blows up, causing no injuries

IDF beefs up defenses amid fears Gaza terror groups intend to fire rockets to disrupt international Holocaust meet, avenge killing of 3 who infiltrated border to carry out attack

Military says it is investigating if 3 teenage assailants killed Tuesday were sent by a terror group

Apparently undeterred by Israeli warning of forceful response if Hamas tries to disrupt World Holocaust Forum, suspected explosive device lands in family's backyard in Sdot Negev

Recent incendiary attacks launched by disgruntled individuals, not terror group, official claims, but are signals to Israel to pick up pace of informal truce talks

Incident comes amid rising tensions along the border between Israel and the Strip's Hamas rulers, with sudden return of balloon-borne bombs and threats of further violence

Incident continues recent spate of balloons attached to explosives, as Israel warns Hamas of forceful response if it tries to disrupt World Holocaust Forum in Jerusalem

TV report: Terror group, seen behind spate of arson balloons, told it would face 'forceful' response if, as feared, it tries to undermine this week's memorial summit in Jerusalem

Police say sappers called to central moshav of Mesilat Zion; Hebrew media reports explosives and a small Palestinian flag attached to balloons