A security guard and an off-duty Mesa police officer opened fire on an armed teenager outside a private Halloween party early Saturday morning after the teen allegedly shot at the guard when he was denied entry to the event, according to authorities.

A security guard and a customer were critically injured Friday night after an argument over a dog inside a southwest Houston grocery store escalated into an exchange of gunfire, according to the Houston Police Department.

Savannah, G.A. – Chaos unfolded Wednesday evening at Oglethorpe Mall after a shooting left at least five people injured and sparked a massive emergency response.