MARYVILLE, Tenn., Ramadan 16, 1436, Jul 3, 2015, SPA -- Thousands of evacuees will likely be allowed to return home Friday, more than 24 hours after a freight train carrying a poisonous liquid derailed and burst into flames, sending plumes of toxic gas into the air and possibly the groundwater, UPI reported. Maryville City Manager Greg McClain said some 5,000 displaced residents may slowly be allowed to return to their homes by late Friday after the CSX freight train derailment about 20 miles south of Knoxville, Tenn. McClain said the repopulation would begin with businesses and continue to neighborhoods, with those on the outer circle of the evacuation area returning first. --SPA 20:15 LOCAL TIME 17:15 GMT www.spa.gov.sa/w