According to a definition for "quash" in some dictionary, "quash" means:
"to take action to stop something from continuing"
which suggest that "quash" is used with some sort of activity/event/process.
Then, I saw this passage:
( articles.latimes.com/2009/jul/28/sports/sp-pete-rose28 )
"Rose, now a West Coast guy, awoke to reports in the New York Daily News that Hank Aaron and other unnamed Hall of Fame members had been lobbying Commissioner Bud Selig for a favorable ruling on Rose's application for reinstatement, filed in 1997. But Selig and other Major League Baseball officials had quashed that story before the day was over."
A story is not an activity/event/process. So, would a rewrite like this:
"...Major League Baseball officials had quashed the release of that story...."