Israeli jets bombarded on Saturday a site belonging to al-Qassam Brigades, the military wing of Hamas, eastern Khan Yunis city, southern the Gaza Strip.
No casualties were reported, sources said.
The Israeli planes are still hovering in the city's sky, the sources added.
Israel tightened its security measures along the Gaza Strip borders after three teenagers hitchhiking in the West Bank have been missing since Thursday night and are feared to have been kidnapped.
Source: MENA