Lancaster police didn't arrest Dallas chief's son in incident before shootings

Eiserer:

The live-in girlfriend of Dallas Police Chief David Brown's son made a frantic call to Lancaster police Sunday morning, telling them that her boyfriend had had a "psychotic breakdown," had hit her and thrown her out of their apartment.
http://tinyurl.com/25j9k5o

Goldstein:
Chief David Brown issues statement on Lancaster shootings to Dallas police: http://tinyurl.com/23z2qkd