(CBS) – A man was found dead in a bathroom aboard a Metra commuter train Thursday afternoon, police said.

Authorities said there was no sign of trauma and foul play was not suspected.

Officers responded to the Aurora Transportation Center around 2 p.m. after the body was found aboard a Burlington Northern line train, police said in a news release.

Metra said a conductor was doing a routine check on the Chicago-to-Aurora train when the body was discovered.