A bomb was placed under a vehicle parked outside a fancy restaurant in Gaza City Wednesday, damaging the car and the facade of the eatery, the owner and police said. No one was hurt and no group claimed responsibility for the blast, Ramzi Shaheen, a police official said. But in recent months, there have been a number of attacks on Internet cafes and record stores by what security officials suspect is a secret "vice squad" of Muslim terrorists. In Wednesday's explosion, the vehicle was badly damaged and the glass facade of the restaurant was shattered. There were no injuries.