The Criminal Investigation Team has already traced the usage of these two public telephones through the telecommunications department.
It can be confirmed that these two public telephones have only records of calls to 12 missing persons in recent times, with no other usage records.
This means if someone deliberately touched these public phones, then the person who called the 12 missing individuals might have left some traces on the phone.
For example, fingerprints or saliva.
Lu Chuan has already collected some fingerprints on the phone receiver, wiped the surface to see if any saliva residue could be found, and planned to investigate it later for any potential discoveries.
"Surveillance has been checked."
Zhang Hui sighed: "But nothing special was found."
"Among the 12 people who disappeared, some left by taxi, some on foot, some by bus, and others by subway."
