26/11 Mumbai Taj Hotel attack by Pakistan based Islamist terrorist organisation Lashkar-e-Taiba, 2008, [2560×1804]

A total of 175 people, including civilians, security personnel, and nine of the attackers, were killed in the attacks, with more than 300 injured. Among the dead were 29 foreign nationals. One attacker was captured. The bodies of many of the dead hostages showed signs of torture or disfigurement.

Pakistan initially denied that Pakistanis were responsible for the attacks, blaming plotters in Bangladesh and Indian criminals, a claim refuted by India, and saying they needed information from India on other bombings first. Pakistani authorities finally agreed that Ajmal Kasab was a Pakistani on 7 January 2009, and registered a case against three other Pakistani nationals.

In July 2009, Pakistani authorities confirmed that LeT plotted and financed the attacks from LeT camps in Karachi and Thatta.
Pakistan arrested a few members of Jamaat ud-Dawa and briefly put its founder under house arrest, but he was found to be free a few days later.

Source :-
1) https://en.wikipedia.org/wiki/2008_Mumbai_attacks
2)https://www.brookings.edu/articles/mumbai-attacks-four-years-later/

3)https://www.humanrightsinitiative.org/blog/read-reports-on-the-2611-mumbai-attacks-accessed-from-the-maharashtra-legislature-under-the-rti-act-while-the-union-home-ministry-denies-access