Some officials at Virginia Tech university warned their own families before a campus-wide alert was issued in the 2007 mass shooting that killed 32 people, according to a revised state report released Friday.

CBC reports:

At least two officials with a crisis response team called their family members after the first shootings at a dorm and about 90 minutes before the all-campus alert was issued at 9:26 a.m.

The revised report, made partly in response to requests from victims' families, also added details about troubling behaviour exhibited by the gunman, Seung-Hui Cho, before the incident. It also includes information from his mental-health records. READ MORE