It is unclear if the shooter committed suicide or had been killed

A gunman opened fire at a veterans medical clinic in El Paso, Texas, fatally shooting another person, according to Army Major General Stephen Twitty, commanding general of Fort Bliss, at a Tuesday night press conference.

The shooter was also killed.

Get push notifications with news, features and more.

“The alleged shooter is dead and the casualty is dead, said Twitty. “It is an active crime scene, and the shooting incident is under investigation. Everything is under control, and there is no immediate threat to Fort Bliss or the immediate community.

It is unclear if the shooter committed suicide or had been killed.

John Meza, spokesman for U.S. Rep. Beto O’Rourke, who represents El Paso, said the shooter killed a doctor before he took his own life, according to CNN.

Doug Lindquist, special agent in charge of the FBI’s El Paso office, said authorities were currently interviewing eyewitnesses to find out what happened at the El Paso Veteran Affairs Health Care System s clinic.

“We have hundreds of potential witnesses and we are processing them now,” he said at the press conference. “The next step in addition to witness interviews is to process the crime scene.”

The shooting was reported at 3:10 p.m. at the William Beaumont Army Medical Center, which is adjacent to the clinic. Police placed both buildings on lockdown.

The VA clinic handles everything from flu shots to mental health issues for active duty or retired military personnel, Fort Bliss spokesman Gil Telles tells PEOPLE.

Authorities have not released the name of the shooter or the victim.

Fort Bliss was the site of two shootings in recent years, according to Telles. In September of 2010, Retired Army Sgt. Steven Kropf killed one woman and seriously injured another on the post. He was later shot dead by Army civilian police.