Contractor blames utility in Omaha natural gas fire
![Contractor blames utility in Omaha natural gas fire](http://bloximages.chicago2.vip.townnews.com/journalstar.com/content/tncms/assets/v3/editorial/c/3c/c3c692f5-962b-5539-876f-7a071448fa4a/5691d69b5f85b.image.jpg?resize=300%2C164)
OMAHA — The Minnesota excavation company that city authorities blame for causing a downtown Omaha fire says the Metropolitan Utilities District should be held responsible for the natural gas explosion.