Gallery: Editor's Picks
Sports news
Latest articles
The deputy speaker of the country's Senate also sent his congratulatory message to the new leader.
The election has been marred by a dispute as the Somali government says it will not recognize the result.
A Houthi military spokesman had earlier said that air defenses had brought down a U.S. drone.
In 2013, he refused to swipe t-shirts with an Israeli player in a display of support for Palestinian rights.
The attack was the second in two days as the government tries to stabilize the country's capital.
The surprise decision gives the long-sitting assembly extra time to remain in power and serve.