Jerusalem (CNN) -- A Palestinian was killed after Israel bombed two tunnels in the south of Gaza, Palestinian medical officials said on Friday. Israel -- which also bombed a weapons storage facility in northern Gaza -- said its strike was in response to mortars that were fired into Israel and hit a government building in the southern district. A search is going on for another Palestinian thought to be in the rubble. In a statement, Israel Defense Forces (IDF) said it "remains committed to protecting" Israeli citizens against terror. "The IDF holds Hamas solely responsible for terror emanating from the Gaza Strip," the statement said.
1 dead in strike on tunnel . Another thought to be missing . IDF says strike in response to mortar fire .