HOUSTON – Three men were killed and another was injured in a shooting Tuesday night at a night club in Midtown, according to Houston police. According to a security guard at the club, there were two shooters. The security guard told investigators he had never seen the suspects before and searched them before they entered the club, police said. The security guard said the suspects didn’t have any weapons on them, so he believes they snuck the guns into the club. “About 10:30, you hear boom, boom, boom, boom so everybody just took off running from outside and that’s when you see people coming out of there running for their life," Stephenson said.