QUETTA - Three minors were killed and their father sustained injuries in a landmine blast in Jaffarabad district on Wednesday. According to the officials, three children were on their way to Dera Allah Yar alongwith their father when on one of them stepped on a landmine laid by unknown persons across the road near Goth Mitha Khan. The landmine exploded killing three children on the spot while their father received serious wounds. Names of children were identified as Waheed, Sarwar and Sughra. The injured and deceased were rushed to nearby hospital. Soon after the blast local police reached the site and cordoned off the area. Police has registered a case against unknown terrorists and started further investigations.