Fire officials in Mt. Vernon say a woman was found dead inside her apartment after a fire on Yauger road. A neighbor’s 911 call just after midnight Sunday to report a strange smell, brought Mt. Vernon fire fighters to the scene, where they could see a fire through an apartment window. RichlandSource.com reports, the cause of death is believed to be smoking while using a home oxygen system, which caused it to combust. No foul play is believed to be involved and the woman has not yet been identified.