Police Report

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Police report Case No: 1996 Investigating Officer: 1. Nitchanan Thapthim 2. Panicha Vongthoytong 3. Wanwarisa Krittiyasrisumet 4. Watcharit Polsen

Date: 19/09/18

Dispatch Information Incident Type: Reporting a disturbance Location: 210, Nakhon Nayok road, Chemistry lab Time: 10:58 am Additional Details: None Event Synopsis Scene Description: We received a disturbance call from a chemistry lab located in 210, Nakhon Nayok road at 10:58 in the morning. The call reported us a crime was happened in the lab but without further information was given about the crime. We dispatched our team for investigation and arrived at the scene in 11:00 in the morning. We discovered a man around working age was lied down with his chair on the floor. There was a surgical blade on his throat and puddle of blood near his body. We also noticed another puddle of blood, a bottle of white pills, a journal written in blue pen with a pen on it, and a tray filled surgical blades and scissors on the lab desk.

Interview Conducted​: Name: Bill, Lab Manager “ I had a meeting here in the Lab at 11 o’clock, but before that I heard a loud bang, maybe around a half past ten, not much sure, but maybe around that, which might be from the scene. At that time, I think there is nothing because I think that I might ​hearing things. S ​ o, when it was nearly 11 o’clock, I walked to the lab in order to have a meeting, I saw a dead body in the lab and no one had seen and touched the scene yet.” Evidence Collected: Item Description: Fingerprint (Left) Log Number: FP001 Details: The FP001 is one of the two obvious fingerprints on the table near the victim. It is located on the left of another near the two scissors and a tray while the tip of the fingerprint directly faces to the tray. The fingerprint itself has a Ulnar loop patterns. Item Description: Fingerprint (Right) Log Number: FP002 Details: The FP002 located on the right side of the FP001 while the tip of the fingerprint directly points to the tray. It has a Ulnar loop patterns.

Item Description: Percocet (medicine) Log Number: HB096 Details: There was a bottle of Percocet in the scene located near two pairs of scissors and a journal. However, the lid was closed and there was no medicine scatter outside the bottle.

Item Description: Blood Sample (DNA) Log Number: BS149 Details: There were blood spilled on both the floor and on the table. A pool of blood is located beside where the body lies, and another is on the table near the dissecting tray. There was also a small spill on the head of the body.

Item Description: Journal Log Number: BI022 Details: Sept_2018 (Today) “ My boss is terrible and scares me to death. They are unstable! I swear he/she wanted to killed to kill me after. I humiliated them in today’s meeting. I don’t ”

Actions Taken 1) We took photos around the crime scene as evidences before entering for further investigation. 2) We screened around the scene for more evidences in which we found; a) A journal, presumably written by the victim. b) Blood puddles on the table and near the victim’s body. c) Weapon that cause the victim’s death, a surgical blade. d) A jar of pills labeled “Percocet.” e) A tray with surgical blades and scissors 3) We conducted an interview on the witness, Bill about the crime scene 4) We collected some blood samples from the puddles for DNA blood test. 5) We spread charcoals on the lab table for finding fingerprints, in which we will use to determine the owner of those prints. 6) We took the pill from a jar to identify their origins 7) We took the victim’s DNA for estimate the time of death. 8) We collected all evidences and test results and finalized the investigation. Test Results Test: Fingerprint We collected and traced the fingerprint in the crime scene. We observed the two fingerprints that we got, and the result turned out that the two are the same where both of the two fingerprints, FP001 and FP002, have the same figure of Ulnar loop. Test: Blood testing We saw spillages of blood in the scene both on the floor and the table, so we collected them to test the DNA. As the result, both of them got the same pattern in the gel electrophoresis, meaning that the blood is from one person.

Test: Percocet In the scene, there is a bottle of a percocet on the table. We collected and observed in order to know whether it fits with the sample. As a result, it turned out to be positive which is the same as the percocet sample that we got. This positive result means that there this chemical, percocet (pH 3) is in the body.

Test: Time of Death We estimated the time of death by looking at the time DNA’s protein being denatured. We then used the formula to calculate the time of death [Body temperature = Ae​-ct​ + B]. The time that we got is 3.41 hour, therefore, the time of death is 3.41 hours before the police came to investigate the scene, which is around 7:30 am.

Investigation Results In conclusion, we would like to say that this is a murder scene. By looking at the evidences available, we could see that there are a bottle of Percocet, a cup of coffee with coffee (normal, not decaf)

and a journal of the victim written about his boss. According to the fact that percocet (opium based) has a side effect that weaken the body and make the person who consumed the medicine tried, the victim get tried and therefore have no energy to fight back against the murderer. A cup of coffee strengthen our assumption because caffeine makes the body absorb the chemical quicker. Another evidence is the journal that the victim had left. Inside the journal, victim had wrote about his boss that he/she is very terrible for him and that he thought that his boss wanted to kill him. We also spotted a flaw between the interview and the information we have gathered. In the journal, the victim wrote, “I humiliated them in today’s meeting. I don’t.” By looking at this, we can interpret that the meeting had already occurred, however, the interview from Mr.Bill said that he is having the meeting at 11:00 am. The time of death of the victim is also not match with the interview. The body is already dead for about 3.5 hours ago, but Mr. Bill reported to the police at 10:58. So, we suspected that Mr.Bill might be the murderer of the victim in this crime scene, and we’ll henceforth continue to investigate his intention further.

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