by Steven Marrocco and Ken Pishna- MMAWeekly.com
Antonio Rogerio Nogueira has been forced to withdraw from a scheduled bout against Brandon Vera at UFC 109 on Feb. 6 in Las Vegas.

Nogueira aggravated an ankle sprain that would prevent him from preparing for the bout properly, according to sources close to the situation.

Sherdog.com reported Tuesday night that Nogueira had fractured his ankle and that the UFC was currently searching for a replacement opponent for Vera.

However, Vera on Tuesday night posted a bulletin via his Twitter account, which he later deleted, stating that he had already been assigned a new opponent, the fast-rising Jon Jones, in an unannounced card on March 21 in Denver.

Independent sources later backed Vera’s post, but clarified March 31 as the date for a UFC Fight Night event leading up to the premier of the next season of The Ultimate Fighter.

Additional sources said Nogueira could be headed for UFC 111 on March 27 against an opponent to be determined.

Stay tuned to MMAWeekly.com for more updates on the story as they become available.