Four missiles of Grad type have been launched from east Gaza Strip into central Israeli town, according to reports reaching here Thursday evening from Israel. The missiles that targeted the towns of Ashdod, Gan Yavne and Nitzan in western Negev, left no human damage, Israel Radio reported. One of the four missiles was intercepted by the Iron Dome. The attacks took to six the number of missiles fired by Palestinian groups in Gaza into Israel today, according to the report. In a related development, Israeli Air Force Apaches opened fire at plantations in Sheikh Ejlain village, to the south of Gaza City, local sources told KUNA tonight. No casualties were reported so far, the sources said.