[cnn-photo-caption image=http://i2.cdn.turner.com/cnn/2009/CRIME/09/22/terror.probe/art.zazi.gi.jpg caption="A lawyer for Najibullah Zazi disputes claims that bomb-making plans were found on his client's computer."]
The Department of Homeland Security and FBI have issued security bulletins to raise awareness regarding "terrorist interest" in attacking sports and entertainment venues as well as luxury hotels.
The bulletins, which were sent to law enforcement Monday, said that authorities did not know of any credible or specific terrorist plots to attack U.S. stadiums, arenas or luxury hotels.
However, it said that terrorist groups such as al Qaeda view crowded stadiums and arenas as potential targets. It said hotels are also attractive targets for terrorists.
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