Modern Warfare 3 developer Infinity Ward has threatened to ban any players taking advantage of a glitch in new DLC for the game.

Creative strategist Robert Bowling Tweeted last night:

"There's a glitch in Black Box that allows you to get under the map. Fix already in the works, out by Friday. Don't exploit, we'll be banning."

His post got a hostile reception from some, who accused the developer of punishing gamers for its own cock-up.

"Shouldn't be banning people for your mistakes. Let them have their fun but hurry up and fix it," Tweeted one follower.

"Big man handing out bans for releasing a broken map. I bet you sleep well at night knowing you hand out bs bans. ;)," wrote another.

The first Modern Warfare 3 DLC collection launched on Xbox 360 earlier this week.