Gunfire near the middle of the dome from the prison located near the port of Mogadishu.
It was not immediately clear why the prison was attacked.
Unconfirmed reports say fighting is taking place inside the prison between prison guards and inmates.
Sources said he was shot some prison guards, as reported strong confusion in prison.
The casualties of the shooting are not yet clear, and there is no word from the Somali Correctional Forces Command.