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, Japanese police said Thursday.

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. 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 $5,000 US.

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 nearly 1,000 kilometers from her home in southern Miyazaki to be detained in Sapporo, where the man lives, the official said.

Online miscreants usually banned

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, virtual lives have had consequences in the real world.

When bad deeds lead to criminal charges, prosecutors have found a real-world activity to cite — as in this case, in which the woman was charged with inappropriate computer access.

In August, a woman was charged in Delaware with plotting the real-life abduction of a boyfriend she met through the virtual reality website 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 $360,000 US.

Virtual games are popular in Japan, and Second Life has drawn a fair number of Japanese participants. They rank third by nationality among users, after Americans and Brazilians.