HOUSTON -- A man is dead after an altercation with a gentlemen's club security guard northwest Houston.

The shooting happened just after 1 a.m. on Antoine near Hempstead Road at the Casanova Men's Club.

Witnesses said it started when the security guard refused to let in two men who appeared to have been drinking. When the son tried to fight him, the guard sprayed them with pepper spray.

The father came over to the guard and started to threaten him, witnesses said. Then the father left, but returned with a gun.

The witness said the security guard pulled out his gun and ordered the man to drop his, and when he didn't, the guard fired two shots. Witnesses said he was forced to shoot to protect himself.

The victim died at the scene, and Houston police spent the morning interviewing witnesses. Houston police said the guard will not likely face charges, but the case will be referred to the Harris County District Attorney's Office.