Chapter 14 Chapter Thirteen

Wang Gedong's expression changed when he was angered by the kidnappers. He had never seen such an arrogant kidnapper.According to the sound analysis in the conversation, this person is very young, but I am afraid he is a psychopath.He calls himself "we", and it seems that there are accomplices. He hurriedly asked someone to go to Wangjiang Road again to bring back the other box. Immediately after thinking about it, he must follow the steps to arrest the kidnappers. He called all the main members of the criminal investigation team over to arrange work. First, immediately check the mobile phone signal. Once the area where the target is located is determined, report back immediately. Then arrange plainclothes to approach the kidnapper's location by repairing pipelines and other methods.

Second, find two plain clothes, go to school and ask Jiang Xiaobing's classmates who were with him yesterday, what happened last night, and restore the whole story.This matter must be hidden and careful, because the kidnappers are likely to watch the police secretly.It is already 6:30 in the evening, so I have to go to school quickly and finish my work before the end of night self-study. Third, take out relevant electronic equipment from the warehouse and modify Wang Liqin's mobile phone so that no matter what call she receives, she can immediately connect to the police station, and the police can issue instructions for conversation.

Fourth, let Wang Liqin go home first, and send two people dressed in plain clothes to sneak into the house secretly, and connect the home phone to the police station. As for the three million cash that the kidnappers asked for, Wang Gedong never thought about it at all. He thought that if everything went well, the kidnappers would be caught tonight. The work started quickly, and Wang Gedong stayed in the office to direct. Soon, Lin Jie brought the first news: "Boss, the signal cannot be detected." Wang Gedong hesitated, and said, "What's going on?" "The other party turned off the phone. Every time the kidnapper called during the day, he turned it off immediately after turning it on. According to the location of the signal during the day, it was found that the kidnapper was in a moving state. The technician said that the kidnapper may have used a signal jamming device to make the mobile phone signal not. Fixedly sent to the same mobile phone base station, this device is also used in many fraudulent calls. In addition, because the kidnappers have a short boot time, the signal data received by the mobile company is limited, and the technicians can only determine the area within a few square kilometers. It is impossible to accurately locate the position."

Wang Gedong said: "When the gangster turns on the phone next time, how long will it take for us to find out his location?" Lin Jie said: "We have monitored Jiang Xiaobing's mobile phone number. Under normal circumstances, even if he continues to use the signal jamming device, as long as he is turned on for more than two or three minutes, we can lock him in an area with a diameter of no more than 100 meters. Inside." "What if he still hangs up after saying a few words like today?" Lin Jie shook his head helplessly: "The area measured is still quite large, so it's hard to be sure."

"In our public security, we can't find any powerful technicians who can accurately locate the signal location?" "The technician said that if the other party does not use a signal jamming device, since we have monitored the other party's number, as long as the other party turns on the phone, we can lock the other party's position within ten seconds. The principle of checking the position is to correct it according to the position where the mobile base station receives the signal. The time The longer the range, the more accurate the range. But the signal jamming device is to make the mobile phone signal not fixedly sent to the nearest base station, so it is difficult to confirm the exact location. Moreover, the technology of domestic mobile companies is not as good as that of developed countries, such as the United States because of anti-terrorism needs , The data of mobile operators is more abundant, and domestic technology construction is not considered so much. If the kidnappers continue to use jamming devices, hang up the phone for a minute or two and turn off the phone, even if they call the national security, they will not be able to find out. "

Wang Gedong scratched his hair, frowned and said, "Understood, you continue to watch other things, and arrange a special person to watch the mobile phone signal 24 hours a day." Within a few minutes, Wang Liqin's plainclothes sneaked into Wang Liqin's house and called: "Boss, we searched the house, and there is no monitoring and monitoring equipment. The connection equipment for her mobile phone has been installed. We are staying at her house and are on call at any time. " "Okay, you can stay at her house tonight." After some time, the two policemen came back with another cardboard box, which naturally contained Jiang Xiaobing's second boiled ear.

Wang Gedong glanced at it, disgusted for a while, this gangster is really a pervert, he actually cut off his ears and boiled them in a pot.Judging from the degree of cooking, it should be steamed. He told them to take the stuff down to the medical examiner, and check the cardboard box for any additional clues. Because Wangjiang Road is not monitored, and the cardboard box is so small that it can be stuffed into clothes, even if the gangsters pass by other monitored roads, they cannot be identified by the police as suspects, so Wang Gedong did not ask them to report Wangjiang. Surveillance near the road for investigation.

At around ten o'clock in the evening, the school's plainclothes came back to report: "Boss, last night Jiang Xiaobing and three classmates skipped class and went home before the end of night self-study. The time should be around nine ten. When they passed by an Internet cafe, the three The classmates went to play inside, and Jiang Xiaobing went home alone. What happened after that, the three of them said they didn’t know.” Wang Gedong's face was a little gloomy, and he said, "Did the three take notes separately?" "Well, we asked them separately. We carefully checked the confessions. There is no contradiction in the three confessions. This is their detailed confession. By the way, boss, do you want to bring these three students back for further interrogation?"

Wang Gedong read the confession, found no discrepancy, shook his head and said: "No need, after all, I am a student, and I will have class tomorrow. At first glance, it has nothing to do with these three students. Well... so, you can find out Jiang Xiaobing's possible route home , to see which road sections are monitored, and then call the traffic police and ask them to bring the monitoring over.” "Okay, I'll do it right away." I was busy until midnight, and finally found Jiang Xiaobing in the monitoring. He walked into a small road that is not a main road. This road is not long, about 400 meters long. On one side is the river, on the other side is a whole row of residential buildings and shophouses, with no other passages.

So this road is equivalent to a closed section. The clarity of the video was poor at night, but the general situation could still be seen. After Jiang Xiaobing entered from the first monitor, he never came out from any monitor. Wang Gedong was deep in thought, did the kidnappers live in this short residential building of more than 400 meters and took Jiang Xiaobing upstairs, or did the kidnappers drive and take Jiang Xiaobing away? Regardless of the answer, it was impossible to try to solve the case tonight.