Update: Juan Carlos Mata who murdered his 19 year old ex-girlfriend killed himself.

"In an update Thursday morning, police said Mata came back to the apartments where his ex-girlfriend was killed and died from a self-inflicted gunshot wound outside."

https://abc13.com/lesley-reyes-shot-and-killed-pasadena-domestic-shooting-man-kills-ex-girlfriend-suspect-takes-his-own-life/13439977/