JULY 21, 2005 - Posted at 7:38 a.m. CDT
LONDON - London police say emergency personnel are responding to reports of incidents at three stations in the Underground subway system.
Police say the Warren Street, Shepherds Bush and Oval stations have been evacuated.
A London Underground spokesman says there are no reports of casualties.
One witness tells Britain's Sky news that he smelled smoke, and that people were panicking.
Meanwhile, ABC News has reported that there may be a similar incident this morning with a public transit bus in London.