OJ Simpson is to face a judge next week to answer allegations that he broke the terms of his bail in a Las Vegas armed robbery case.

A hearing will be held on Wednesday at the request of Clark County District Attorney David Roger, who is preparing a motion to revoke former football star Simpson's bail, according to a clerk for District Court Judge Jackie Glass.

"We understand he's in the custody of his bail bondsman in Florida right now, and will be brought to Las Vegas for the hearing," said Elana Pitaro, a clerk for Judge Glass.

WSVN-TV in Miami later showed footage of Simpson walking through Miami International Airport. "I can't talk to you guys. I cannot talk to you guys," Simpson said before boarding the plane.

A bail bondsman at You Ring We Spring bail bonds in North Las Vegas declined to comment.

Simpson was freed on September 19 on 125,000 dollars (£62,000) bail following his arrest after he and several friends were said to have burst into a Las Vegas hotel room and robbed two sports memorabilia dealers at gunpoint.

Simpson's lawyer, Yale Galanter, did not comment.

Simpson allegedly called one of his co-defendants in the robbery case in contravention of his bail conditions, a court official said later.

Prosecutors say Simpson, identifying himself as "Miguel", telephoned Clarence "CJ" Stewart on November 16 and expressed frustration with Stewart's testimony at a preliminary hearing, court spokesman Michael Sommermeyer said.

That was two days after a Las Vegas judge ruled that Simpson, Stewart and another co-defendant should stand trial on 12 charges, including kidnapping and robbery. Simpson has maintained that he was retrieving items that belonged to him. He and the two other men are scheduled to stand trial on April 7.