A cruel man allegedly killed his six-month-old son by throw him against a wall during quarrel with his wife here in Nadirabad locality of the city on Monday. According to police, the accused identified as Naveed had a quarrel with his wife and in a fit of rage, he threw his six-month-old son Faizan against a wall. The infant sustained critical wounds and was rushed to hospital but he breathed his last on the way. The police have registered a case against the accused on the application of his wife and arrested him. The police said that the accused doubted character of his wife and the couple used to quarrel over the issue. The police have handed over the dead body to the family.