Chlorine in the pool might have been the reason why the four Russian tourists were found dead inside 'Gloria Palace' Hotel two days ago in Qerret village of Kavaja in Albania.

This is the main investigative truck of police officers in Albania. 

"The Russian tourists asked to use the inside pool of the resort, which was closed from a week. Early on Friday I cleaned it with chloride in order to be used by the tourists," said for police the person who cleaned the pool.

After his testimony, police suspected that maybe he used to much chlorine causing the asphyxiation of tourists. In order to prove this truck, police took examples of the water in the pool.