BREAKING NEWS: ‘Active shooter’ reported at YouTube HQ in California

Employee Vadim Lavrusik tweeted at around 1pm on Tuesday: ‘Active shooter at YouTube HQ. Heard shots and saw people running while at my desk. Now barricaded inside a room with coworkers.’

This is a breaking news story. More to follow. Lavrusik was evacuated 20 minutes later.

Startling photographs from its expansive campus show employees leaving the building with their hands in the air.