NEW : Some opposition fighters retreated amid tough resistance . Negotiator : ` ` The deadline came yesterday when they fired at our forces '' Opposition forces have been staging outside the town for nearly two weeks , surrounding it on three sides , while negotiations were under way . Gadhafi loyalists clash with fighters in Bani Khalid , a military commander says . Fighting also is ongoing outside the rebel stronghold of Tripoli , a spokesman says .
NEW : Some opposition fighters retreated amid tough resistance . Negotiator : ` ` The deadline came yesterday when they fired at our forces '' Gadhafi loyalists clash with fighters in Bani Khalid , a military commander says . Fighting also is ongoing outside the rebel stronghold of Tripoli , a spokesman says .