A 32-year-old man was fatally stabbed Friday, allegedly by his colleague, at a sushi restaurant in Tokyo's busy Ikebukuro area where he worked, police said.The police arrested Masahito Ishioka on suspicion of murdering Tomoyuki Iwata at around 4:30 p.m., before opening time, they said, adding that the 56-year-old admitted to having killed him due to an interpersonal problem.The suspect was quoted by the police as saying he stabbed Iwata with a kitchen knife after his anger "exploded" against the victim.Ishioka stabbed Iwata in the chest and stomach, among other places, they added.The restau…READ FULL ARTICLE