Family of YouTube shooter Nasim Aghdam speaks to ABC News' Matt Gutman.

The father of the woman who allegedly opened fire at YouTube's headquarters in Northern California this week told reporters how sorry he is in the wake of the shooting.

Inside the open space, there is "tremendous accessibility," an expert told ABC News.

The suspect in the shooting at the YouTube campus, Nasim Aghdam, killed herself after the shooting.

The lunchtime shooting sent YouTube employees fleeing for their lives.

A nearby restaurant owner said two wounded people rushed over to him.

The suspect, Nasim Najafi Aghdam, reportedly had a vendetta against YouTube.