Before crime scene cleanup teams are even allowed to begin their work, police investigation teams do a thorough investigation of the scene, bagging and tagging all evidence. However, while providing their scene remediation services, professional technicians are careful to look out for and preserve any potential evidence, especially anything that might be of use to the forensics teams.
For example, after a successful convenience store robbery, the robber escaped to his vehicle and drove away as the injured clerk, losing blood, alerted the police. The emergency response team arrived quickly at the scene and ordered an ambulance to transport the clerk to the hospital. The injured store clerk was able to give police detectives a detailed description and the police were also able to review surveillance videotape. Crime Scene Cleanup
After a thorough investigation of the crime scene by CSI, a professional cleaning company was called by police to clean up the aftermath of the robbery. One of the technicians noticed a tiny speck in the blood as they cleaned the area around the counter. This was something that the police had missed because it was so small. Apparently, the robber had scratched himself on a metal appendage attached to the counter when he drew his gun.
Police detectives were notified of the discovery. Police were notified by one of the cleanup technicians who showed it to them. As this company frequently conducts suicide scene, meth lab, odor removal and other death scene cleanups as well as blood and trauma scene cleanups, they have experience working with police and identifying substances.
The police ran the blood for DNA analysis and compared it to samples they had in storage at the county jail. The photo of a previous defendant that matched the one in the video footage from the convenience store was used to identify him. The courthouse located the address of the victim and arrested and convicted him.
Although this isn’t a common occurrence it is a requirement for trauma scene remediation work. Attention to detail is a primary qualification. Crime scene cleanup is not like janitorial service. The job of professional biohazard cleaners is to eliminate potential hazards from blood and bodily fluids wherever they land. For this reason alone, these cleanup teams are required to thorough and pay special attention to details. However, if it a source of great pride whenever something like this happens and the team is able to assist the police in their investigation.