He was exposed to high temperatures and high humidity for several hours while processing the outdoor homicide scene. He was transported to the hospital from the scene after he began to exhibit symptoms of heatstroke. He was treated and released from the hospital but continued to experience health issues as a result of the heatstroke.
On November 1st, 2019, he called 911 after suffering additional health issues and was transported to the hospital in cardiac arrest. He died a short time later.
Sergeant Montijo had served with the Chattanooga Police Department for 12 years and had previously served with the Los Angeles, California, Police Department for eight years. He is survived by his wife, two children, mother, and three sisters.