A train derailment in a Houston suburb blocked crossings and snarled traffic Wednesday morning, though no injuries were reported.About 24 rail cars left the tracks in Rosenberg, Texas, on the southwest side of Houston, around 5 a.m. Wednesday.Police said the derailment led to blocked crossings throughout the adjacent city of Richmond. It is not yet clear what caused the derailment or how long the crossings will remain closed. Drivers are encouraged to avoid the area if possible.Officials have not reported any injuries.For the latest local news updates, click here, or download the KRIS 6 News App. Catch all the KRIS 6 News stories and more on our YouTube page. Subscribe today! ...read more read less