When India and Pakistan nearly went to war because of Jaish-e-Mohammad chief Maulana Masood Azhar

Delhi: Pakistan on Wednesday arrested Jaish-e-Mohammad chief Maulana Masood Azhar, his brother and "several individuals" belonging to his dreaded outfit, which is suspected to have engineered the Pathankot terror attack, and sealed its offices after India demanded action on the group linking it to the fate of Foreign Secretary-level talks.

Azhar's brother Abdul Rehman Rauf has also been arrested, Geo TV said, as per PTI.

Even as this big development took place today, we take you back in time when tensions has escalated like never between India and Pakistan before because of terror group JeM and its founder Masood Azhar.

In a brazen terror attack, Parliament of India was targeted on 13 December 2001.

The perpetrators were said to be Lashkar-e-Taiba (Let) and Jaish-e-Mohammed (JeM) terrorists.

However, LeT denied any involvement in the incident and in November 2002, four JeM members were caught by Indian authorities and put on trial.

Delhi Police claimed that five militants carried out the attack, namely Hamza, Haider alias Tufail, Rana, Raja, and Mohammed all of whom were killed by the security forces.

And the court had observed that three more people from across the border namely, Maulana Masood Azhar, Ghazi Baba alias Abu Jehadi and Tariq Ahmed were also involved in planning the attack.

One of the accused, Afzal Guru, was sentenced to the death for the attack.

The terrorists infiltrated the Parliament House in a car with Home Ministry and Parliament labels when Rajya Sabha and Lok Sabha had been adjourned 40 minutes prior to the incident.

However, many MPs, Union Home Minister LK Advani and government officials were said to have been still in the building at the time of the attack.

The attack led to the deaths of 14 people which included five terrorists, six Delhi police officers, two from Parliament security service personnel and a gardener.

The attack led to an increase in tensions between India and Pakistan.

On 20 December, India mobilised and deployed its troops to Kashmir and Punjab in what was India's largest military mobilisation since the 1971 Indo-Pakistani war.

Troops were withdrawn in October 2002 by Indian and Pakistan from the International Border after tensions de-escalated following international diplomatic mediation.