A suspect was taken into custody by police in Michigan on Friday after multiple victims were stabbed aboard an Amtrak train in the small city of Niles, a police dispatcher said.
The Niles Police Department dispatcher, who only gave her name as Nicole, could not immediately say how many victims were hurt, or give any further details on the incident or suspect.
Amtrak officials did not immediately return calls for comment.
Niles, a city of about 12,000 people, lies around 10 miles (16 km) north of South Bend, Indiana.
The Chicago Sun Times newspaper said the stabbings occurred on a train that departed from Chicago late on Friday afternoon.
The newspaper quoted a Twitter user who said four people were stabbed in the next carriage along from him, and who uploaded a photograph of a man in a gray jacket lying in handcuffs on the floor of the train.
“Crazy world we live in. Some man just stabbed 4 people one car away from me on the train,” said the user, @Chris_Maynard.
(Reporting by Daniel Wallis in Denver; Editing by Sandra Maler)