NEW : 54 people are killed in a vehicle pileup on a Texas highway . Hospital : Two people remain in critical condition . NEW : Texas State Highway 73 is shut down after a pileup involving at least 50 vehicles . It was likely caused by poor visibility stemming from a mixture of smoke and fog .
NEW : 54 people are injured in a vehicle pileup on a Texas highway . NEW : Four people remain in critical condition . NEW : Texas state Highway 73 is shut down after a pileup involving at least 50 vehicles . It was likely caused by poor visibility stemming from a mixture of smoke and fog .