Police in Northern California say they are responding to an incident involving an "active shooter" at YouTube headquarters.<br /><br />Gunshots were reported at the company's campus in San Bruno, south of San Francisco.<br /><br />Ambulances are at the scene and authorities have warned the public to stay out of the area.<br /><br />Google, which owns YouTube, has said it is investigating a possible "gunfire incident".<br /><br /><br /><br />Please subscribe HERE
