Two Somali broadcast journalists were killed just hours apart Saturday in Mogadishu.

Ali Iman Sharmarke, head of the HornAfrik media company, was killed by a roadside bomb as he was returning from the funeral of his employee, Mahad Ahmed Elmi, who had been shot to death earlier in the day.

Another journalist riding in Sharmarke's car was wounded in the bombing.

Elmi, who had a popular daily radio program, was often critical of the violence in Somalia. He was a manager of the Capital Voice radio station.

Somalia's transitional government temporarily shut down another radio station Friday. In an Internet posting, the station said it is closing after police arrested nine staff members, including the acting head of the station.

The radio station said the Ethiopian Embassy recently threatened to close the station. Ethiopia has several thousand troops in Somalia to protect the fragile government.

In a separate incident Friday night, four government officials were killed in the capital.

The Islamic Courts Union took control of the capital last year before Ethiopian troops helped government forces oust the Islamists.

The government has battled an insurgency in Mogadishu since January, shortly after it seized control of the city.

The chaos in Somalia started in 1991 when warlords overthrew dictator Mohammed Siad Barre. The U.N. helped form a government in 2004, but it has not been able to restore peace.

Some information for this report was provided by AFP and AP.