Police said children were used in a weekend car bombing in which the driver gained permission to park in a busy shopping area after he pointed out that he was leaving his children in the back seat. The account appeared to confirm one given Tuesday by a US general. He said children were used in a Sunday bombing in northern Baghdad and labeled it a brutal new tactic put to use by insurgents to battle a five-week-old security crackdown in the capital. Maj. -Gen. Michael Barbero, deputy director for regional operations on the Joint Staff, said the vehicle used in the attack was waved through a US military checkpoint because two children were visible in the back seat. He said it was the first reported use of children in a car bombing in Baghdad. "Children in the back seat lowered suspicion, (so) we let it move through, they parked the vehicle, the adults run out and detonate it with the children in the back," Barbero told reporters in Washington. "The brutality and ruthless nature of this enemy hasn't changed."