Authorities said the officer, working as a security guard, came to help a female security guard remove a sleeping Marlon Horton from the lobby of the building. Horton left, but the guards argued with him when they saw him urinating on a truck outside, Fraternal Order of Police spokesman Pat Camden said at the time. The man allegedly knocked over the officer twice, and ripped several braids out of the other security guard’s hair, he said. When it appeared Horton could get the security guard’s weapon, the off-duty officer drew his weapon, stating several times that he was a police officer and the man was under arrest, Camden said. After the man failed to yield, the officer shot him once in the chest, Camden said.