Blizzard has taken the Diablo III real money auction house offline after an exploit was discovered that allowed players to duplicate gold.

The bug that allowed the exploit appeared in the game's latest update, and has sent its economy into a tailspin.

The exploit: players that cancelled transactions in the game’s real money auction house found that their gold was being refunded twice.

The Diablo III forums were immediately awash with complaints and calls for bans and rollbacks.

A message from Blizzard said that its priority was with fixing any issues with the game client.

“After we've addressed the situation, we'll need to determine whether or not a rollback is appropriate,” it said.

“We know this is an important issue for all of our players, so we’ll be sure keep you informed of what's happening.

“We're currently in the process of reviewing the accounts involved and taking appropriate actions, including temporary locks, suspensions, and/or bans.”

“As always, maintaining a stable, safe, and fun gaming experience for legitimate players is a top priority for us, and we'll continue to monitor activity on Battle.net and take action as needed.”