Luis Fernando Aguiar, 91, was shot and killed inside his Pasadena home in the 1700 block of North Summit Avenue on July 12, 2014. The shooting happened around 4:20 p.m.; he was pronounced dead at the scene about an hour later. His death was one of three fatal shootings that day, which also claimed the life of his daughter, Maria Teresa Aguiar, and a good Samaritan, Jose Hernandez Iribe.

Police identified and arrested 44-year-old John Izeal Smith as the alleged gunman. Reports say Smith had a long-standing relationship with the victims and that the violence was believed to stem from a landlord-tenant dispute. During the incident Smith fired at a police officer who was trying to assist Maria Teresa Aguiar; the officer was not injured. Smith later barricaded himself, called police, and surrendered after a 20-minute negotiation with a crisis negotiator and Pasadena SWAT.

Did anyone in the area know the Aguiar family or have information about the landlord-tenant dispute that could shed light on what led to such deadly escalation?