Quan Jue got the police to take photos of the cigarette butt. After collecting the evidence, he looked up.
There were a total of six floors in the opposite building. Only the windows on the fourth floor were open. Although the lights were turned on, no one stood at the window.
Meanwhile, the lights in the other apartments were turned on and the residents were peering out of the windows in curiosity.
When they saw Quan Jue looking over, the residents quickly ducked, not daring to look anymore.
"Collect the cigarette butt and do a DNA test. Perhaps we can find an eyewitness this time." Quan Jue retracted his gaze and strode towards Chi Jiao.
"Officer Huo, who lives on the fourth floor of this building?" Quan Jue asked.
Huo Chen immediately looked down at the information and answered, "It's a man called Jiang Dashan. He's 42 years old and lives alone."
"Does he smoke?" Quan Jue asked.
