A Briton standing trial for the shooting of Indian student Anuj Bidve on Thursday told the Manchester Crown Court that his mind "went blank" at the time and claimed that he was not aware that he had shot someone.
Kiaran Stapleton has pleaded guilty to manslaughter on the grounds of diminished responsibility, but denies murder.
The trial, which began on June 25, is being attended by Bidve's parents, who have arrived from Pune.
Stapleton said that he "didn't even know where I shot the guy", and added that he had "just raised my hand, shot it and then ran".
He said he did not know that he had killed Bidve until "it came on the news saying a man has been shot dead".
Bidve, a student at Lancaster University, was walking through the Ordsall area of Salford when he was fatally injured.
Stapleton fled the scene of crime but was arrested within days.
Asked why he had shot the gun, he replied, "I honestly don't know. I didn't even know where I shot the guy. I just raised my hand, I shot it, and then ran."
He added that his mind "went blank" after the incident and that he had felt "nothing" on finding out the following morning that he had killed Bidve.