The police identified 2 of London attackers as Khuram Shazad Butt and Rachid Redouane.
The Manchester bomber had been a "Subject of Interest" for MI5 - meaning someone they were investigating -- between January and July 2014, and then again in October 2015.
The rally was being planned by UK-based Kashmiri groups to mark the first death anniversary of the commander of the Hizbul Mujahideen terrorist outfit killed in a gun battle with Indian armed forces in the Kashmir Valley on July 8 last year.
The three men, identified as Pakistan born Khurram Shazad Butt, Moroccan-origin Rachid Redouane and Moroccon-Italian Yousef Zaghba, all had high levels of a drug called DHEA in their system, according to a toxicologist report presented at a pre-inquest hearing at the Old Bailey court in London.
Are we creating videos that can flick on the jihadi switch, asks Vaihayasi Pande Daniel.
Attackers' efforts to hire the bigger truck failed when his payment was declined.
Who were they? What led them to mass murder?