The Israeli military has renewed shelling in the north of the Gaza Strip. Israeli artillery hit targets in northern Gaza in a series of earth-shaking explosions. Residents near the scene of the blasts say they lit up the sky. The sound of the attack could be heard throughout northern Gaza. The Israeli military says it is attempting to stop Palestinian militants from using open areas in the area to fire rockets into Israeli territory. It says Palestinian militants fired one rocket from northern Gaza and two rockets from Southern Gaza into Israel earlier in the day but caused no casualties. Palestinian militant groups have announced their intention to resume full-scale attacks on Israel after a truce expired at the end of 2005.