Early Wednesday morning, residents in one Bronx building got a scary awakening - and not from their alarms. It all went down in the Mott Haven section when a sudden explosion rocked a NYCHA apartment complex, sending shock through the community and leaving folks asking, "What just happened?"RELATED: What's Goin' On?! United States Government Shuts Down For The First Time In Six YearsBronx Building Took A Tumble, But We're Counting BlessingsAccording to ABC7, the blast happened just after 8 a.m. at the Mitchel Houses, a 17-story NYCHA complex.