I have searched on internet but I haven't found any genuine information related to IB (job description particularly). Can anyone guide me on how to find any genuine info related to the duties and function of IB? any legitimate guidance will be highly appreciated.

The Intelligence Bureau (Urdu: سراغرسانی کا دفتر‎; Reporting name: IB), is a civilian intelligence agency in Pakistan. Established in 1947, the IB is Pakistan's oldest intelligence agency. Appointments & supervision of its operations are authorized by Pakistan's Prime Minister.

History

The Intelligence Bureau originally part of the British Raj's Intelligence Bureau which was established by the British Army's Major General Sir Charles MacGregor who, at that time, was Quartermaster General and head of the Intelligence Department for the British Indian Army at Shimla, in 1885. Prior to this appointment, Major General Sir MacGregor was sent to British Indian Empire by the Queen Victoria. The IB's objectives were to monitor Russian troops deployments in Afghanistan, fearing a Russian invasion of British India through the North-West during the late 19th century.

In the aftermath of the independence of Pakistan by the British Crown, the IB, like the armed forces was partitioned, with a Pakistan IB created in Karachi. Since, the IB is the oldest intelligence community; others being the Military Intelligence (MI) of Pakistan's military. The IB was initially Pakistan's only and main intelligence agency with the responsibility for strategic and foreign intelligence, as well as counter-espionage and domestic affairs.

Its poor performance with the MI and unsatisfactory detailing of the war with India in 1947 was however considered less than exemplary. Due to the fact, IB was concerned with internal security matters, and was not set up for foreign intelligence collection. These considerations ultimately led to the creation of the ISI in 1948 as it quickly took the charge of gathering strategic and foreign intelligence at all levels of command.

Appointment for IB's Director-General are made by the Prime Minister but the appointment has to be confirmed by the President.The IB is a civilian intelligence agency, and its DG have been appointed from the civil bureaucracy and the police; as well as retired military officials have also served as DG IB.

Constitutionality and powers

The IB agents have no formal arrest powers, and its suspects are often apprehended and interrogated by the FIA agents at the request of the IB officials.

The IB also passes on intelligence gained through infiltration between other Pakistan's intelligence community, police, and other Law enforcement units. The Bureau also grants the necessary security clearances to Pakistani diplomats and judges before they take the oath. Powers granted by the government, the IB also intercepts and opens regular mails and letters on a daily basis.

Read more at http://www.cssforum.com.pk/pakistan-...er-police.html

__________________
“What we need in this country today is more courage and more belief in the things that we have.”- Thomas J. Watson

Thank you for your response. But the link you have posted is still based on opinions (most of them biased)