On 13 December 2001 a terrorist attack occurred on the Indian Parliament (during which twelve people, including the five terrorists who attacked the building, were killed) and the legislative Assembly on 1 October 2001.[30] India claimed that the attacks were carried out by two Pakistan-based terror groups fighting Indian administered Kashmir, the Lashkar-e-Taiba and Jaish-e-Mohammad, both of whom India has said are backed by Pakistan's ISI[31] a charge that Pakistan denied.[32][33][34] The military buildup was initiated by India in response to the twin attacks leading to the 2001–02 India–Pakistan standoff between India and Pakistan.