Chapter 844: Unprecedented Pressure
Early the next morning, Song Mingguang arrived at the telecommunications company.
"Base station?"
"No problem, all phones need to go through a base station to send signals when making calls, sending texts, or logging onto the internet."
Telecommunications technology is far more advanced than most people imagine.
Through the base station, calls, texts, or internet logins will leave some records.
Some records can even be recovered using certain technical means, even if deleted by the other party.
Song Mingguang’s investigation was extremely detailed. He aimed to check everyone’s call records, text records, and even internet login records.
Especially the bank where the funds from the coal mine were deposited.
The two coal mines had no business transactions or storage arrangements, and the funds were in two branches—one in the lending bank for the cash transportation, and the last one in the bank where the incident occurred.
If there was an insider in the bank, then the staff from the first and third banks were most likely involved.
Therefore, Song Mingguang focused on investigating the personnel in these two banks.
"Captain Song, this person named Zhang Huang made a call 38 minutes before the incident."
"Check the other party’s phone number and see whom they called."
Song Mingguang’s team consisted of more than twenty people; one could say the elite of Binzhou’s City Public Security Bureau in telecommunications technology were serving him.
The time the coal mine deposited cash in the last bank was 56 minutes before the robbery.
In other words, within the hour before the robbery, everyone who made calls should have their answers recorded.
Investigate the people who received calls and make registrations one by one.
While Wang Song and Song Mingguang conducted in-depth investigations, Lu Chuan was also busy with his work.
First was fingerprint examination.
The fingerprints on the four cash boxes were extracted completely.
Lu Chuan spent most of his night doing identification and analysis.
Unfortunately.
In total, there were 42 sets of fingerprints, with 28 sets easily matched.
The remaining 14 sets were severely deformed, which took Lu Chuan a long time to settle.
But the results were not promising.
The fingerprints were either from the escorts or bank staff, with no unknown fingerprints.
Lu Chuan had carefully inspected the four cash boxes and noticed some friction marks; the fingerprints were wiped, likely because the culprits wore gloves.
Very cautious, leaving no loopholes.
However, Lu Chuan never had much hope for them anyway.
The three robbers meticulously planned the robbery, leaving the boxes on the scene indicating no loopholes.
Indeed, there were no fingerprints.
Fortunately, Lu Chuan had another important lead.
Short hair.
After completing the fingerprint identification analysis last night, Lu Chuan began processing this short hair to extract DNA information.
Early in the morning, Lu Chuan sent someone to the Cui family to collect DNA samples.
The other party had returned from out of town the previous night.
First, rule out the possibility that the short hair was left by the Cui family members, which could then guide if it was left by a suspect.
Regarding the genetic database...
Lu Chuan was not very hopeful about it.
The sample size inside was too small, and the chance of matching was not significant.
In other areas, everyone was also pushing the investigation forward, mainly focusing on field investigation visits.
Looking for eyewitnesses, using them to pinpoint the suspect’s whereabouts.
But in this aspect, it’s clearly tough to achieve quick results.
Meanwhile, the armed bank robbery in Binzhou City triggered widespread attention across various fields.
This kind of case might not happen nationwide in several years.
Therefore, all levels attached great importance to solving this case.
Li Donglin received three to five calls from Li Gang and the principal leaders by the morning.
Simultaneously, there’s immense pressure in Binzhou City.
In the past year, criminal cases in Binzhou City have shown an increasing trend. The city had mediocre economic development, and now a bank robbery happened.
This has changed the external views on Binzhou City’s public security environment, and even its investment environment.
Thus, it is urgent for all parties to quickly solve this case and punish the suspects.
"At six o’clock in the afternoon, hold another case analysis meeting, and everyone will report progress."
Li Donglin sent a meeting notice to the task force members.
Time is tight.
Solving a case isn’t wishful thinking; you can’t solve it just by wanting to, but the deadlines set by all parties are a fact.
Hence, a massive amount of manpower and resources are devoted.
The time quickly passed, and by six o’clock in the afternoon, the task force members again sat in the meeting room.
The impact of this case is huge, and all levels pay great attention."
In his past efforts leading the task force to solve cases, Li Donglin faced pressure mostly from the case itself.
But this time is different, Li Donglin clearly felt pressure from all levels.
Not only do leaders from the provincial department focus tremendously, but even higher-level leaders too, and Binzhou City feels like ants on a hot grill.
The chief of police came twice.
"The reason for telling everyone this is to let you realize the urgency of solving this case."
"Now, each team report their work progress."
"Wang Song, you first."
"Yes."
Wang Song has already identified the sellers of the anti-riot gear used by the robbers.
"The anti-riot gear worn by the robbers in the footage is quite special, and it’s rare online; we’ve found 72 buyers online so far."
"Up to now, we have contacted all 72 sellers and asked them to track down shipping orders in Binzhou City and its vicinity."
"Currently, we know only two sets were sold to Binzhou City."
"One set was sold five years ago, and another set was sold a month ago."
"We have identified the ones sold a month ago and ruled out their involvement, but the one sold five years ago is no longer in Binzhou City, and we haven’t contacted them yet."
"However, based on the preliminary investigation, the possibility of this anti-riot gear appearing at the scene is nonexistent—the time span is too long."
"Besides, since three robbers wore three sets of riot gear, I personally believe they likely purchased together."
"We are currently investigating offline channels, but have yet to find any leads."
From Wang Song’s perspective, the robbers might have anticipated that the police would investigate the riot gear’s channels.
So they didn’t opt for online purchases.
There’s also the possibility that the three bought individually, but had them shipped to different places, then brought the riot gear back to Binzhou City through some means.
Wang Song’s report concluded.