One of two Gilroy murder suspects caught on video surveillance was arrested today. The victim of last week’s homicide was 56-year-old Robert Heiser, who was found unconscious last Monday in his Gilroy home. Paramedics tried to help Heiser, but attempts failed and he was declared dead at the scene. 19-year-old Gabriela Ortiz was identified from surveillance video footage that showed her and another woman using the victim’s credit card at a San Jose Store a few days after the murder. Ortiz was arrested and booked into Santa Clara County Jail, while the other suspect in the footage still remains at large.