A firefight erupted Tuesday between Yemeni security forces and gunmen, dressed in police uniforms, who had been surrounding the headquarters of the interior ministry, witnesses said. The gunmen, who were previously working unofficially in Yemen’s police department, had been surrounding the ministry’s headquarters in Al-Hasaba district of Sanaa since Sunday, demanding that they be enrolled back into the impoverished country’s police force. The exchange of fire using Kalashnikovs was heard intermittently throughout the late morning hours, witnesses said. The gunmen had served unofficially among the ranks of Yemen’s police when it was led by Mohammed Abdullah al-Qawsi during the rule of former president Ali Abdullah Saleh, security sources told AFP.