British men help detain suspect after knifeman shouting 'Allahu akbar' goes on rampage in Sydney
Three Britons have described the "very surreal" moment they apprehended a knife-wielding man in Sydney moments after he allegedly stabbed a woman to death.
Footage posted online appears to show a suspect standing on a vehicle roof, holding a knife aloft and shouting, before being taken down by bystanders, who caged him by trapping him in chairs.


Police and witnesses said the knife-wielding man yelled "Allahu akbar", or "God is great", and attempted to stab several people in the Australian city before being arrested.
New South Wales Police said in a statement: "Inquiries are under way after the body of a woman was found inside a unit on Clarence Street, Sydney, about 3.15pm (0615 BST) today.