Amateur video shows the frantic scene near Washington's Ethiopian Embassy Monday.br br Secret Service detained a man after shots were reported around noon.br br A protest was reportedly taking place at the time. And many people witnessed the incident.br br (SOUNDBITE) (English) TESFA SIMAGNE, PROTESTER, SAYING:br br "About half a block from the embassy, I heard at least four shots, and I thought there were people killed."br br No injuries were immediately reported.br br And authorities are investigating the incident.