DADU- At least four passengers, three women and a minor were killed in a roadside mishap here on today morning. Ten others were injured. According to reports, a passenger coach going to Sehwan from Naseerabad collided with a truck on Dadu Indus Highway near Khudabad today morning, killing at least four people and injuring 10 others. The deceased were identified as Komal, Wazir, Musarrat and Fehmida. They were shifted to Civil Hospital Dadu . Some of the injured were critical. The police are investigating the cause of the accident .