TOKYO - A 43-year-old player in a virtual game world became so angry about her sudden divorce from her online husband that she logged on with his password and killed his digital persona, police said.

The woman, who has been jailed on suspicion of illegally accessing a computer and manipulating electronic data, used his ID and password to log onto the popular interactive game "Maple Story" to carry out the virtual murder in May, a police official in the northern city of Sapporo said Thursday. He spoke on condition of anonymity because of department policy.

"I was suddenly divorced, without a word of warning. That made me so angry," the official quoted her as telling investigators and admitting the allegations.

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

She has not yet been formally charged. If convicted, she could face up to five years in prison or a fine up to US$5,000.

Players in "Maple Story" create and manipulate digital images called "avatars" that represent themselves, while engaging in relationships, social activities and fighting monsters and other obstacles.

In virtual worlds, players often abandon their inhibitions, engaging in activity online that they would never do in the real world. For instance, sex with strangers is a common activity.

The woman used login information she got from the 33-year-old office worker when their characters were happily married to kill the character. The man complained to police when he discovered that his online avatar was dead.

The woman was arrested Wednesday and taken 620 miles (1,000 kilometers) from her home in southern Miyazaki to be detained in Sapporo, where the man lives, the official said.

The police official said he did not know if she was married in the real world.

Bad online behavior is usually handled within the rules set up by online worlds, which can ban miscreants or take away their virtual possessions.

In recent years, misbehavior in the virtual world has in some cases had consequences in reality.

In August, a woman was charged in the U.S. state of Delaware with plotting the real-life abduction of a boyfriend she met through the virtual reality Web site "Second Life."

In Tokyo, a 16-year-old boy was charged with stealing the ID and password from a fellow player of an online game in order to swindle virtual currency worth US$360,000.