New Haven police say it happened around 5:30 a.M. (local time) across the street from the Ivy League campus. Officials say the suspect fell six stories onto a third-floor terrace. His name is being withheld pending notification of his family.
Police say 21-year-old stabbing victim Alexander Michaud is in stable condition at Yale-New Haven Hospital. Officials say the men were acquaintances and Yale students.
A Yale spokesman had no immediate comment.
Authorities haven't released details of what happened before the stabbing and jump.