It was the worst explosion of violence in southern Pakistan in nearly two years.
There also have been cases of soldiers' joining Afghan refugees to cross into southern Pakistan.
The M3 will eventually become an important link connecting southern Pakistan with the north.
The majority of southern Pakistan's population lives along the Indus River.
Judge Junejo's special anti-terrorist court was one of several set up last year to tackle rising violence in southern Pakistan.
By 12 August, flood waters were sweeping through villages in southern Pakistan.
He is believed to be hiding in Karachi in southern Pakistan.
They are unrelated to the Langah tribe of southern Pakistan.
February 26 - A police official says a blast at a Sufi shrine in southern Pakistan has killed two people.
This version was considered too expensive and under-performing in the extreme heat of southern Pakistan.