Some lanes were blocked on Interstate 270 in Bethesda, Maryland, Sunday night for a stabbing investigation.
Montgomery County police said one person was stabbed in the northbound lanes of I-270 before Old Georgetown Road.
The right side of I-270 was shut down and traffic was backed up about a mile. All lanes are now back open.
Police later said the victim cut their self. Their condition is not known at this time.
Stay with News4 and NBCWashington.com for updates to this developing story.