ISLAMABAD  - Filming on the latest Fantastic Beasts movie starring Jude Law has been shut down after an outbreak of COVID-19 among the cast and crew.Fears that the mutant South African strain was responsible has led to Warner Bros to temporarily halt production at their studios in Leavesden, Hertfordshire. A set insider said there was concern the coronavirus variant was present in staff despite strict protocol measures put in place after a previous outbreak at the studio.Last year production of the new Batman film shut down for two weeks after star Robert Pattinson caught the virus.The studio was also the scene of a foul-mouthed rant by Tom Cruise after he spotted some of the crew on the set of Mission: Impossible7 ignoring social distancing. A source at the Leavesden studio said film bosses are not revealing who among the cast and crew has contracted the virus. In September the dialect coach on set got it, but filming continued. The source suggested that while crew can be replaced, for production to be suspended a principal member of the cast involved.