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A federal official confirmed to NBC News on Tuesday that the FBI is looking into allegations that officials of the St. Louis Cardinals illegally hacked into a computer database of the Houston Astros.
The investigation was first reported by The New York Times.
Major League Baseball Commissioner Rob Manfred said his organization was cooperating with authorities, including responding to FBI subpoenas, but was not conducting its own investigation. He declined to discuss the potential impact.
"It really doesn't make sense to me to speculate on how serious a problem I have," Manfred told reporters in a previously scheduled news conference in Boston.
He noted that in addition to figuring out what happened, there are also questions about whether rogue members of the Cardinals organization were to blame or whether the club was aware of it and condoned it.
The Times reported that among the information compromised was internal Astros discussions about trades, proprietary statistics and scouting reports.
Manfred said he couldn't recall an earlier example of theft of a team's proprietary information.
The Cardinals said in a statement that they were aware of the investigation and cooperating. The team would not comment further. The Houston Astros said they were also cooperating.
The Cardinals have been among the most successful teams both in baseball history and in recent years. They won the World Series in 2011 and 2006 and have the best record in the game this year.
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