Some people dodged security barriers and charged their way in to see the Nigerian singer.
The use of technology to help officials make more accurate offside decisions will be tested at the Fifa Arab Cup, which starts on Tuesday.
Presenters Nick Robinson and Martha Kearney of Radio 4's Today programme had to evacuate the building.
Fire services and safety experts ask the government to reform laws to hold shopping sites accountable.
The BBC show went silent on Monday morning when an alarm told people to leave the building.
Music entrepreneur Grace Ladoja on working with Skepta and building her own festival in Nigeria.
Closure would have been "a disgrace to civilisation", says best-selling author Philip Pullman.
Abloh, who was Louis Vuitton's artistic director, had been suffering from a rare form of cancer.
Former England striker Carlton Cole apologises after he compared the possibility of a heavy West Ham defeat by Manchester City to the Holocaust.
Elodie Bateson, 11, from Limavady who is blind has become an expert at making short animated movies.