PRAGUE (Reuters) - A French tourist bus crashed near the historic Czech town of Cesky Krumlov, killing one male passenger and injuring 17 others, the Czech news agency CTK reported on Wednesday. CTK said the accident happened on Tuesday when the bus swerved into an approaching truck. Police were investigating what caused the bus driver to veer out of his lane. The agency quoted hospital officials as saying one of the injured passengers was in serious condition and would undergo an operation later on Wednesday.