A city centre tower block was sealed off by armed police today after reports that gunmen had carried out a robbery in the building.A dozen police vehicles - including four armed response cars - surrounded The Horizon, formerly known as Thames Tower, just off Burleys Way.The incident, which began shortly before 1pm, saw the police helicopter hovering high above the 16-storey building, a mixture of flats and offices, in Navigation Street, overlooking the Burleys Way flyover.The drama unfolded at...
