Police say he was resisting arrest
Pamerleau said the incident occurred after authorities responded to a domestic disturbance call coming from Flores' home Friday morning. When they arrived, they found a woman and baby, both of whom appeared to be injured.
The woman had suffered a cut on her head, and the baby also appeared hurt, the sheriff's office said.
Authorities say Flores resisted arrest and nonlethal force -- stun guns and shields -- were used to try to subdue him, but those didn't work, Pamerleau said.
She said both deputies fired shots after a "lengthy confrontation."
http://www.cnn.com/2015/09/01/us/san-antonio-bexar-county-texas-police-shooting/