Mistrial for Harvard Student

The second manslaughter case against a former Harvard graduate student has ended with a mistrial.

Alexander Pring-Wilson was charged with the fatal stabbing of Cambridge teenager, Michael Colono, during a 2003 street fight.

He was convicted in 2004, but got a new trial when the state supreme court ruled that the victim's violent past was relevant to Pring-Wilson's self-defense claim.

Middlesex County District Attorney Gerry Leone said in a statement he plans to retry the case.

"We will honor the memory of Michael Colono by continuing to fight for justice on behalf of him, his family, and the Commonwealth," Leone said.