Another senseless and heartbreaking shooting has occurred at an LGBTQ nightclub.

Late Saturday night (Nov. 19), just before midnight, local authorities of Colorado Springs, CO received numerous 911 calls from Club Q, an LGBTQ nightclub where a gunman had opened fire.

At least five people were killed with an additional 18 injured in the shooting.

Later, at a news conference outside of the nightclub, Lt. Pamela Castro, a public information officer with the Colorado Springs Police Department, said "that the investigation was only beginning and that the number of victims was subject to change. She added that the victims had been taken to multiple area hospitals," reports The New York Times.

"Numerous officers and medical immediately responded to the area and officers immediately made entry," Castro continued. “They did locate one individual who we believe to be the suspect inside. At this point in time, the suspect is being treated, but is in custody.”

In a statement on its Facebook page, Club Q posted: "Club Q is devastated by the senseless attack on our community. Our prays and thoughts are with all the victims and their families and friends. We thank the quick reactions of heroic customers that subdued the gunman and ended this hate attack."

Earlier in the day, the club's Facebook page shared Saturday night's events which were scheduled to be a "punk and alternative" drag show followed by a dance party.

In a statement, Colorado Gov. Jared Polis, who is gay, called the attack "horrific, sickening, and devastating."

"My heart breaks for the family and friends of those lost, injured, and traumatized in this horrific shooting," Polis continued. "Colorado stands with our LGTBQ community and everyone impacted by this tragedy as we mourn together."

Colorado Springs Mayor John Suthers said a news conference is scheduled for Sunday morning, which will be live-streamed on the CSPD Facebook page.

It has been more than six years since the horrific mass shooting at Orlando's Pulse Nightclub that claimed the lives of 49 people, many of whom were LGBTQ+ people of color. At the time it was named the deadliest mass shooting in U.S. history.

"Oh god. My heart is broken and I’m transported right back," Pulse Nightclub survivor Brandon Wolf tweeted after the news broke of the Club Q shooting.

At Sunday (Nov. 20) morning's media briefing, Colorado Springs Police Chief Adrian Vasquez identified the suspect in the Club Q shooting as Anderson Lee Aldrich, a 22-year-old male.

Vasquez said the shooter stepped into the club and "immediately began shooting at people inside," but at least two patrons stopped him from unleashing further violence. 

“We owe them a great debt of thanks,” said Vasquez. “Club Q is a safe haven for our LGBTQ citizens. Every citizen has a right to feel safe and secure in our city, to go about our beautiful city without fear of being harmed or treated poorly.”

This is a developing story.