PRINCE GEORGE'S COUNTY, Md. (DC News Now) -- Four people were hospitalized due to a strong chlorine odor at a hotel in Prince George's County Saturday, according to the Prince George's County Fire Department. DC firefighters battle ten-story apartment fire Firefighters say crews respond ed at 6:10 p.m. to a Holiday Inn in the 1400 block of Laurel Pl. after visitors noted a strong chlorine odor in the indoor pool. According to firefighters, the building was then evacuated. Twenty people were medically evaluated, with four being transported to the hospital with non-life-threatening injuries. Firefighters say a hazmat crew determined the cause of the smell to be from cleaning supplies. ...read more read less