Suspect in Santana Row Valentine’s Day murder case attacks rival gang member in juvenile hall

Suspect in Santana Row Valentine’s Day murder case attacks rival gang member in juvenile hall

In the two months since the teenage boys were arrested after the stabbing of a 15-year-old on a Valentine’s Day date at Santana Row, one of them attacked a rival gang member in juvenile hall, another tested positive for drugs there, and a third — who has been living at home with an ankle monitor — violated the terms of his release when he went out for the evening without permission. For the family of David Gutierrez — whose girlfriend held him a…