UNITED NATIONS - UN Chief Ban Ki-moon Monday called on Gaddafi's forces to stop fighting immediately and make way for peaceful power transition as the Libyan rebels claimed that they were in control of most of Tripoli. I call on Colonel Gaddafis forces to cease violence immediately, and make way for a smooth transition, the Secretary-General told reporters at UN Headquarters in New York. It is crucial now for the conflict to end with no further loss of life and retribution. Replying to a question, the UN chief said he had no information about the whereabout of Col. Gaddafi. The nearly 42-year regime of Colonel Muammar al-Gaddafi is reported to be on the brink of collapse after the lightning advance by the rebels seeking his ouster gained control of the capital, and two of the Libyan leaders sons were arrested. The dramatic scenes we are witnessing in Tripoli are a testament to the courage and determination of the Libyan people to seek a free and democratic future, Ban said. "It is crucial now for the conflict to end with no further loss of life and retribution. Ban welcomed the assurances given by the Chairman of the National Transitional Council, Mustafa Abdul Jallil, that extreme care would be taken to protect people and public institutions, and to maintain law and order. This is a hopeful moment, but there are also risks ahead. Now is the time for all Libyans to focus on national unity, reconciliation and inclusiveness.