The Israel Defense Forces (IDF) said they have expanded their operation in Gaza City, with ground troops backed by the air force engaged in fighting with Hamas units in the Zeitoun district. Israeli forces were also targeting Hamas facilities in the southern neighbourhood, the IDF said in a statement on Tuesday. So far, they have discovered a weapons manufacturing site, a weapons depot, rocket launching sites and military equipment. They also came across a group of Hamas fighters in a tunnel entrance, the statement said, adding that the Israeli forces destroyed the shaft and killed the Hamas f…