Israeli tanks began moving into the Mughazi refugee camp in central Gaza early Wednesday under cover of machine gun fire from troops. The IDF confirmed that an operation was in progress. The camp, with 22,000 residents, is near the Gaza-Israel fence and across from the Palestinian town of Deir al-Balah. IDF forces operated in the region late last week before withdrawing. Israeli troops have also swept through southern Gaza and carried out two invasions of northern Gaza, trying to stop terrorists from firing rockets at Israel. The incursion was preceded by several hours of tank movements on the Israeli side, as well as exchanges of fire between soldiers and Palestinian gunmen. No casualties were reported.