Someone died, and the body was stiff and soft. What happened?

After death, the body will undergo a series of changes, including stiffness and softness. Forensic research shows that muscle stiffness occurs first after death, which is manifested as masseter muscle, neck muscle, facial muscle stiffness and mandibular joint fixation. Within 1-3 hours after death, rigor mortis will spread throughout the body. After a period of time, the water in the body will be lost, blood and body fluids will begin to penetrate each other, and the body will become soft again. Therefore, the combination of rigidity and softness of the body is a normal phenomenon in the process of death.