A fire broke out in Xiachuan Apartment at 5:27 a. M., Resulting in one death. After the fire was extinguished, the police investigated and concluded that the deceased was the landlord of Xia Chuan Apartment. He was 31 years old and unmarried. After examination, the forensic doctor concluded that the deceased did not die from the fire, but had died before the fire. ——This is a murder case. Through various aspects of police investigation, the following suspects were found
Intention: