Police were called to Elstree Studios after a guest told staff in a bar area he had a bomb in his bag.
Show insiders feared Big Brother celebrity housemates were at risk as the drama unfolded.
A barmaid who was confronted by the alleged bomber was left with her arm in bandages when she hurt herself as she tried to secure the bar, which is used by visiting celebs.
An onlooker last night revealed: “Everyone was terrified. For all we knew he was being deadly serious and we could have all died.
“Moments after the man told staff he had a bomb everyone ran out of the bar. The celebrities in the house had no idea they were just feet away from a very real bomb scare.”
The suspect is thought to have been an audience guest for the Friday edition of spin-off show Big Brother’s Bit On The Side.
Celebrities nearby at the time included Vanessa Feltz, Pamela Bach-Hasselhoff and The Only Way Is Essex star Harry Derbidge.
Police arrived at the site, in Borehamwood, Herts, just after 10pm and arrested the suspect. Read More