Update:
Norfolk Southern says it is moving derailed freight cars off the tracks after two trains collided in Georgetown, Kentucky.
The company said in a statement on Monday that four train crew members taken to the hospital after the crash as a precaution have been released with no injuries, though one employee is still being evaluated.
Officials say the trains collided head-on late Sunday, derailing both locomotives and 13 cars. Lexington Fire Department spokeswoman Lt. Jessica Bowman said nearby residents were evacuated as a precaution, but were allowed to return home once officials determined there was no safety risk.
Norfolk Southern said it is working to clear and repair the track and have it back in service Tuesday.
Earlier:
The investigation continues Monday into a train accident near Georgetown, Kentucky. The collision of two Norfolk Southern freight trains occurred just before midnight Sunday.