21.   A concrete overhang collapsed Thursday evening in a crowded subway entrance in St. Petersburg, killing at least six people and injuring several, news reports said.

22.   A concrete overhang collapsed Thursday evening over a crowded subway entrance in central St. Petersburg, killing at least five people and injuring several, officials said.

23.   A concrete overhang collapsed Thursday evening over a crowded subway entrance in central St. Petersburg, killing at least six people and injuring several, officials said.

24.   A concrete overhang collapsed Thursday in a crowded subway entrance in St. Petersburg, killing at least two people and injuring several, news reports said.

25.   A man critically injured by a firebomb that shot flames through a crowded subway car was arrested in his hospital bed Thursday and charged with attempted murder and assault.

26.   But authorities say Abu Mezer and another Palestinian man were actually plotting to carry out a suicide bombing on a crowded New York City subway.

27.   Ingredients that could be combined to make poison cyanide gas were found in a crowded subway station bathroom Friday.

28.   Investigators trying to piece together the bomb that exploded in the crowded subway car said the device was similar to those used by the GIA in attacks in Algeria.

29.   Long trips at rush hour on a crowded subway line would cost substantially more than a short trip at off-peak hours, resulting in an optimal distribution of riders.

30.   On a slate gray morning, a man in a tan overcoat stepped into a crowded subway car, coffee in hand, pushing to make room.