The incident occurred Friday after passenger Joseph Egan, 30, slipped the driver a note alleging a woman who appeared drunk near the back of the bus had threatened to have him "shanked," or stabbed, by friends, the Canwest News Service reported.

Egan and a friend moved to another part of the bus. He told police the woman followed him and threatened to have him beheaded. After getting Egan's note, the bus driver called the Royal Canadian Mounted Police, and told passengers he had to stop because of mechanical problems.

The unidentified 41-year-old woman and two male companions were arrested. The men were released after sobering up, but the woman faces charges of possessing a weapon and uttering threats, the RCMP said.

The incident was very near the location where a sleeping Greyhound passenger was stabbed and then beheaded by a fellow passenger in late July, the report said.