A 41-year-old man, upset after he was told to leave a secured area of Pearl Harbor, allegedly threatened a security officer with a knife, police said.

The security officer told the man to leave an unauthorized area of Pearl Harbor about 2:45 p.m. yesterday, police said. 

A short time later, the guard returned and told the man again to leave, but the man became upset, pulled out a knife and threatened the officer, police said.

Police were called and officers arrested the man on suspicion of first-degree terroristic threatening and for a warrant.