The head of Libya's National Transitional Council (NTC) says an interim government will be announced in the coming week. Mustafa Abdul-Jalil says Libyans must united to form a new government. The NTC failed to seat a new Cabinet last week amid disagreements over which cities should be represented and other issues. Abdul-Jalil spoke to reporters after returning from New York where he and the NTC's premier Mahmoud Jibril represented Libya at the first post-Moammar Gadhafi U.N. General Assembly. Meanwhile, backed by rockets and heavy artillery, hundreds of Libyan revolutionary fighters pushed into Muammar Gaddafi's hometown from the west Saturday in the first significant assault in about a week. Explosions rocked the city and plumes of smoke rose into the sky as Gadhafi's forces returned fire with mortars and rocket-propelled grenades. The two sides have been locked in a standoff since former rebels tried to advance on the city a week ago but were repelled by fierce resistance.