A migrant from Guatemala has been arrested on allegations he lit a sleeping woman on fire inside a Coney Island F train on Sunday morning. Police sources say a civilian identified the suspected killer as he rode on a train at 34th Street in Manhattan. The witness waved down the cops, who later picked the suspect up and detained him. He has not been charged with a crime yet, sources added. The suspect entered the country and was detained by border patrol agents in Arizona in June 2018 Authorities were still working to confirm whether he is in the country...