Smith Alec News Today

>> we heard this huge he can motion. >> that explosion brought down the second story of this duple duplex. one man inside is badly hurt. good evening. allen is live in east oakland tonight where investigators stlai was a natural gas explosion. right allen? >>reporter: yes. if you look behind me you can see workers replacing the 20 windows blown out of the apartment next door. and this is what is left of a two story duplex that collapsed from the impact of what fire investigators believ...