At least six dead in shooting at Chicago suburb’s Fourth of July parade

Gunman apparently opened fire on paradegoers from rooftop, police say, as authorities still searching for suspect

• Chicago shooting - latest updates

At least six people are dead and 30 wounded in yet another mass killing in the US after a shooting at a Fourth of July parade in a Chicago suburb.

The attack in the affluent town of Highland Park disrupted the annual parade that celebrates American independence just after it began at 10am. It brought a scene of blood-soaked carnage to one that usually features flags, floats and marching bands.