Israel’s navy shot machine guns at Palestinian fishermen off Gaza on Saturday, causing them to abandon their work and head back to land, local sources said. Nobody was injured in the shooting, but the vessels turned back out of concern for safety or being detained, according to the sources cited by Palestinian news agency Wafa. It comes as Israeli forces shot at Palestinian farmers and shepherds from an observation tower near Khan Yunis city in southern Gaza. The Palestinians, who were near Abasan town at the time, fled. Israel often fires at Palestinian fishermen in the waters off Gaza and at…