Just awful…
As we reported, three people were reportedly wounded by gunfire when a female suspect allegedly targeted some kind of gathering at the YouTube headquarters in San Bruno, California.
Related: Laura Ingraham WILL Return To Fox News Despite Advertiser Boycott
The alleged shooter died of a self-inflicted gunshot wound, according to police.
Immediately after the news broke out, celebs — including several famous YouTube stars — took to Twitter to comment on the tragedy.
Marjory Stoneman Douglas High School students — who survived their own horrific shooting on February 14 — also gave their two cents about the heartbreaking news.
See all the reactions (below):
YouTube stars:
Stoneman Douglas High School students:
[Image via YouTube.]