The San Diego County Homicide Unit has arrested a man in connection with a deadly residential fire in San Marcos on Sunday, according to a press release from the department. 33-year-old Luis Alvarado of San Marcos was arrested on Sunday for two counts of murder and arson. He was booked into the San Diego Central Jail and is expected to be arraigned Thursday in North County Superior Court. The deadly fire was reported at around 11:45 p.m. Saturday night near the 900 block of Lacebark Street. First responders found two people dead inside a room on the second-floor of the structure. The victims’ identities and causes of death are under investigation by the San Diego County Medical Examiner’s Office. Anyone with information about this incident is urged to contact the Sheriff’s Homicide Unit at (858) 285‑6330 or, after hours, (858) 868‑3200. Those wishing to remain anonymous can call Crime Stoppers at (888) 580‑8477. This story uses functionality that may not work in our app. Click here to open the story in your web browser. ...read more read less