Tripoli  - Seif al-Islam Gaddafi, the son of Libyan leader Moamer Gaddafi had by Tuesday not responded to the previous day's call for his return to politics.

Around 5,000 young Libyans took part in a pro-Gaddafi demonstration in central Tripoli on Monday. The youth organization members, wore orange t-shirts and shouted: "We need you to build the future of Libya."

They also urged Moamer Gaddafi to ensure his 36-year-old son became politically active again.

Seif al-Islam Gaddafi announced in August that he would withdraw from the political arena because "problems" would arise if he were to continue.

He had said he had been engaged in many state institutions and service in foreign affairs as well as questions of development and urban planning in Libya. He was however no longer needed now that the government of Libya was on the right path, he said.

Unlike some of the Libyan leader's other children, known for rowdy behaviour in traffic and other scandals, Seif al-Islam runs a charitable foundation and has acted as negotiator in hostage crises and conveyed Libya's position to the world. (dpa)