Gunshots have been reported the headquarters of YouTube in San Bruno, California.

Californian police are said to be responding to reports of gunshots at the building and ambulances are on the scene. Staff members were seen running from the building after the first shots were heard. It is being reported on social media that at least two people have been injured, although there is no confirmation on this from authorities as of yet. A production manager with YouTube tweeted a short while ago that an active shooter had stormed the building and he and his fellow staff members had taken shelter in an office. “Active shooter at YouTube HQ. Heard shots and saw people running while at my desk. Now barricaded inside a room with co-workers."

Active shooter at YouTube HQ. Heard shots and saw people running while at my desk. Now barricaded inside a room with coworkers.

— Vadim Lavrusik (@Lavrusik) April 3, 2018

Safe. Got evacuated it. Outside now.

— Vadim Lavrusik (@Lavrusik) April 3, 2018

  The staffer has since updated followers to share that he has been evacuated.

There is definitely some kind of police action / possible shooting at youtube in San Bruno. my brother just and others went running out of the building when hearing firecracker like sounds. 5 police cars came rushing to the scene...

— Mr Raised Brow (@MrRaisedBrow) April 3, 2018

San Bruno Police have asked people in the area to stay away from the building and confirmed they are responding to an "active shooter".

Police activity at 901 Cherry Ave, please stay out of the area. pic.twitter.com/H6iAj0g7ra

— San Bruno Police (@SanBrunoPolice) April 3, 2018

We are responding to an active shooter. Please stay away from Cherry Ave & Bay Hill Drive.

— San Bruno Police (@SanBrunoPolice) April 3, 2018

Google, who owns YouTube, have commented on Twitter to say they are cooperating with the authorities.

Re: YouTube situation, we are coordinating with authorities and will provide official information here from Google and YouTube as it becomes available.

— Google Communications (@Google_Comms) April 3, 2018

LIVE: NBC News Special Report: Police responding to active shooter at YouTube headquarters in California. https://t.co/ukWFag6eP8

— NBC News (@NBCNews) April 3, 2018

More to follow.