Coast Guard fires on 'suspicious' boat in Washington DC's Potomac River

Cnn is reporting..... The U.S. Coast Guard tried Friday to prevent a boat from entering a security zone on the Potomac River not far from the Pentagon, where President Obama was at an event commemorating the September 11 attacks.

There were reports on police scanners that the Coast Guard fired 10 rounds of ammunition, but those reports could not immediately be confirmed. It was not immediately clear from the reports whether they referred to warning shots.

The incident took place between the Memorial and 14th Street bridges, in a zone that had been blocked off because of the ceremonies.
Obama had departed the Pentagon shortly after 10 a.m. ET. Reports of the incident came in shortly after 10 a.m. ET.