GAZA, April 13 (Xinhua) -- Several Israeli army tanks and bulldozers backed by helicopters stormed an area northeast of the Gaza Strip amid intensive gunfire, Palestinian eyewitnesses and Hamas security sources said.

　　The sources said the Israeli army tanks and a bulldozer rolled about 500 meters into Gaza territory east of Jabalia town in northern Gaza Strip, amid intensive gunfire. No injuries were reported.

　　The Israeli incursion came shortly after Palestinian militants launched two homemade rockets from the area at southern Israeli towns. No damages or injuries among the Israelis were reported.

　　The armed wing of the Popular Front for the Liberation of Palestine (PFLP) claimed responsibility for the rockets attacks, saying in a leaflet sent to reporters that the attack is a response "to the daily Israeli aggression."

　　Meanwhile, Palestinian security sources said the Israeli army arrested five Palestinians in different West Bank areas, including the towns of Ramallah, Hebron and Bethlehem, saying they are wanted to Israel.