MOGADISHU — Renewed clan warfare threatens the future of Kismayo, where African Union and Somali troops earlier this week pushed out extremists. Kismayo was the last bastion controlled by Al-Shabab, the group allied to Al-Qaeda who taxed goods coming into the port to fund their activities. Al-Shabab announced their withdrawal from Kismayo, via Twitter, shortly after the Kenyan assault late last week. But bitter clan rivalry is expected to hamper the creation of a new administration needed to run the city and port, say residents. “We want peace, not clan feuds and a cause for Al-Shabab's return,” said Muhummed Abdi, an elder in Kismayo. “We can share our resources and divvy it out peacefully without fighting,” he said. “We should overcome disputes.” The clan rivalry centers on control of revenues from the port, which is one of Somalia's most lucrative business hubs. Recognizing the threat of renewed clan fighting in Kismayo, the top US official on Africa, Johnnie Carson, this week urged the Mogadishu government and the African Union forces to “go in very quickly and establish political stability and a political system that takes into account the various clan and sub-clan interests.” Kenya, the main military power that captured Kismayo, has invited the rival clans for a conference in Nairobi to establish an administration for the town. A major power player in the region is Sheikh Ahmed Madobe, the commander of the government-allied Ras Kamboni Brigade militia. “Life after Al-Shabab is really good and good, we don't see any more restrictions now,” Sacdiya Hussein, a Kismayo resident said, referring to the strict Shariah law enforced by the rebels. “But during Al-Shabab's reign there were not any clan rivalries, we hope it will remain so.” Kismayo's 2,070-foot-long four-berth port has long been the focus for bloody fighting, predominantly between the Marehan, Majerten and Ogaden clans. However, Ahmed Aadi Aden, a Somali parliamentarian, warned that any clan rivalry for the control of the town would benefit Al-Shabab and may provoke a resumption of clan wars from the years before Al-Shabab, in which more than 700 militiamen were killed. “All forces in the town have participated in the town's liberation. They must be united for that cause,” Aden said. The top UN representative to Somalia, Augustine Mahiga, said Thursday that Kismayo has one of the most complex clan mixes in and that the Somali people must work to achieve a sustained peace there. “There are many clan dynamics that need to be understood, and I think this is high on the agenda of the new president and his incoming government,” Mahiga said. — AP