Six Greyhound bus passengers were killed early Wednesday morning in Manchester, Tennessee when a man attacked the driver and the crashed the vehicle.

Forty-one passengers were on board the bus headed from Chicago to Orlando.

Greyhound temporarily suspended transportation service as a precautionary measure in light of the recent attacks on the country.

All service was restored by noon.

The assailant, Igric Damir, was killed in the crash. Witnesses say that Damir repeatedly asked the driver for the time and their locations before lunging at the driver and slitting his throat.

According to the FBI, the 29-year-old Croatian came to the United States with a one-month visa in March of 1999. This incident is not believed to be connected with the events of Sept. 11.

``This was a disturbed individual...this is not an act of terrorism,'' a Federal Bureau of Investigations agent in Knoxville said.

Fourteen people were stilled hospitalized on Wednesday afternoon, including a woman who as 8 1/2 months pregnant before giving birth to a girl by emergency caesarean section. The temporary shutdown stranded approximately 70,000 passengers.

Many had sought the bus as an alternate means of transportation since the suicide airline hijackings.

Full refunds were being offered by Greyhound Lines and arrangements had been made for Amtrak to accept Greyhound bus tickets. More security measures were implemented on the buses and in stations in addition to those already in place since the terrorist attacks three weeks earlier.