NBC, a unit of Comcast Corp, was the only broadcaster allowed to commentate from the ringside floor and the International Boxing Association (AIBA) said they disturbed officials sitting next to them throughout the competition.

It recommended to the London organising committee(LOCOG) that NBC ' s commentary team leave their position. They were offered a space with the other media but decided to leave instead, AIBA said.

" NBC commentators were offered a booth in the media tribune like other broadcasters because they were very disturbing for AIBA officials - even during bouts they were not broadcasting - being located at the edge of the Field of Play, " an AIBA spokesman said in an emailed statement to Reuters.

" They claimed that since no boxers from the USA were still in the running, they didn ' t want to stay anyway. "

NBC could not immediately be reached for comment.

AIBA said NBC cameramen are still recording footage at the arena and that the fights would be commentated on from New York.

NBC Sports Group Chairman Mark Lazarus gave an impassioned defence of the network ' s Olympics coverage on a conference call Thursday, but conceded some of the criticism levelled at the network had been " fair ".

NBC has paid $۴.۴ billion for the U. S. rights to the next four Olympics through ۲۰۲۰.

America's women boxers picked up two medals on Thursday, one a gold, but its men had their worst performance at an Olympic Games, failing to win a medal for the first time.