Umm el-Fahm police is investigating two shooting attacks which occurred Tuesday night in the city and ended without casualties. During the first incident, the home of a 24-year-old man was fired upon. The man told police that he suspected someone who was involved in a dispute with him. The house was lightly damaged. In the second incident shots were fired and two stun grenades were thrown at a cafÃ©. The establishment was closed at the time and there was no one in the building. The owner, 34, told police that he suspected no one in the attack.