The son of pensioner, Rosemary Shearman, who was killed at her home in Hornchurch spoke today of how he was struggling to come to terms with what happened.
Speaking to the Evening Standard, Gregory Shearman said: "I'm just totally shocked. I don't know what to say."
It's emerged the 72-year-old pensioner was bound, gagged and stabbed in the random attack.
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Hundreds of passengers were ordered to leave the terminal building and flights grounded after passengers suffered difficulties breathing.
Council leaders today called on the government to provide extra money to help resettle the youngsters in the capital.
An eyewitness said: "It was very unnerving. It was just after 12pm and there were suddenly police vans and cars everywhere."