Actually, it wasn't really murder, at least not when real charges are filed:

Japanese woman faces jail over online 'murder'

A Japanese woman could face a prison sentence after killing off her virtual husband in a computer game.

The 43-year-old became so angry about a sudden "divorce" from her online husband in the interactive Maple Story game that she logged on with his password and deleted his digital persona.

She has been arrested on suspicion of illegally accessing a computer and manipulating electronic data.

The woman used the man's username and password to log in to the game and carry out the virtual murder in May, a police official in the northern city of Sapporo said.

"I was suddenly divorced - without a word of warning. That made me so angry," the official quoted her as saying.

The woman, a piano teacher, had not plotted any revenge in the real world, he said.

She has not yet been formally charged, but could face up to five years in prison or a fine of more than £3,000 if eventually convicted.

http://www.guardian.co.uk/world/2008/oct/24/japan-games