The man indicted for the fatal stabbing rampage in Tokyo's Akihabara district last year has sent a letter of apology to one of the victims, saying, "My crime deserves death," informed sources said.

In a six-page letter to former taxi driver Hiroshi Yuasa, who was seriously injured in the attack, Tomohito Kato, 27, said, "I believe I will be executed, but I want to explain everything without becoming defiant."

Yuasa, 55, said he felt as if he had seen a ray of light and that he plans to write back in the hope their exchange will help Kato regret his crime more deeply.