A family argument ended in murder overnight Wednesday after a Petah Tikva man allegedly stabbed his 25-year-old stepson to death. According to police, the man and his son were drunk at the time of the altercation. Both the stepfather and the mother, who was at home at the time, were interrogated by police, following which the stepfather was taken into custody. A month ago, a 72-year-old Upper Nazareth man stabbed his 35-year-old daughter and her husband during a domestic dispute. The two were lightly to moderately wounded and were treated in Afula.