An important document from Quetta police that may help in investigation

[Awi]

Para 2 and 3 seems strange

Verbal orders , yes verbal orders are given been it depends on where are the given ,but when you are calling out all passed constable's back they need official letters to them
What was the reason of this sudden call back
And why no proper security measures were taken
Why would they fire them if they don't accept a verbal order

Exactly, why not individual official letters to the recruits, but seems like someone wanted them there in urgency, so much so that a warning of "firing off the job" was given.