 On April 3, Bremer sent troops to al-Sadr's home and arrested Mustafa Yaqoubi, a top lieutenant, sparking further protests.On April 4, Spanish-led troops clashed with armed demonstrators in Najaf demanding Yaqubi's release, resulting in the death of two coalition soldiers, one American and one Salvadoran, and at least 20 Iraqis.According to one protester, armed supporters of Muqtada al-Sadr, intermingled with the crowd, fired the first shot.