The Israeli military says several Hamas targets in Gaza has been struck after a bomb exploded on the border near Israeli troops. The explosive device was placed along the border fence area during protests and exploded near an Israeli bulldozer on Wednesday, according to the military. No one was wounded, and there were no immediately reports of casualties from the retaliatory strikes, AP said. Israel has warned that it holds Hamas responsible for all violence emanating from Gaza, and will not allow the border area to become a combat zone. Hamas has called for Palestinians to amass at the border as part of a weekslong campaign of protests.