10/06/2011 06:34 EDT | Updated 12/06/2011 05:12 EST

Egypt flights disrupted as Cairo air traffic controllers go on work slowdown over bonus

CAIRO - Airport officials say flights in and out of Egypt have been disrupted because air traffic controllers went on a work slowdown at Cairo airport to protest the government's decision to revoke a promised bonus.

The officials say more than 50 flight have been delayed since the action started late Wednesday. The air traffic controllers were working reduced shifts on Thursday.

One official says several passengers stormed out onto the tarmac and sat down, demanding their flight to Saudi Arabia, delayed for 15 hours, take off. They later returned to the transit hall.

One air traffic controller says negotiations were under way but the protest wouldn't end until the bonus is back on.

All officials spoke on condition of anonymity because they weren't authorized to talk to the media.