Palestinian terrorists in the Gaza Strip have begun launching Russian-manufactured S-5K rockets into southern Israel, Army Radio reported on Sunday. On Sunday morning, security forces discovered remnants of a projectile that was fired by Palestinians in the central Gaza Strip. The rocket hit an open area near Kibbutz Alumim. No one was hurt in the incident and no damage was reported. After examining the projectile, the IDF determined it was a Russian-made S5K-type rocket, intended to be fired from fighter bombers and helicopters to attack ground targets. According to the radio station, the Palestinians altered the projectile, enabling it to be launched from the ground. This is the first time that such a rocket has been fired at Israel from Gaza. A defense official told Army Radio that the use of a new rocket type proves that the weapons smuggling into the Gaza Strip is continuing at full speed. "Iran is constantly trying to arm Hamas, and in addition to this rocket, arms such as anti-tank and anti-aircraft missiles are constantly entering the Strip," the senior official was quoted as saying. Recent rocket attacks on Israel as well as the apparent foiled terror attack near Eilatlast week were part of an attempt by Palestinian terrorist groups to undermine Hamas and disrupt negotiations for a prisoner exchange deal with Israel, defense officials said.