DETROIT, MI – Detroit police say a man opened fire Friday afternoon at a tax office on the city’s east side and wounded four employees there after he and a female companion become irritated that a tax return was not ready.

Detroit Police Chief James Craig told the media Friday that three of the employees are in serious condition and one is in critical condition.

According to reports, both the alleged gunman and the woman he was with, Angel Moore, are in police custody. The alleged shooter's identity was not immediately released by police.

The incident happened at Tax City on Gratiot Avenue near Sheridan Street. Deputy Police Chief Rodney Johnson said a passer-by flagged down police, who then found the alleged shooter less than a block away.