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An arrest has been made after two men were found dead at an apartment complex in Anaheim Tuesday morning. Authorities said a third man who was taken to the hospital after he was found at the bloody scene was responsible for the killings.

Police first got a call about an assault in progress happening inside an apartment around 6:50 a.m. on the 2100 block of of Katella Avenue, Anaheim police said.

When officers arrived, they found two men dead and a third man alive and suffering from minor injuries.

The third man was taken to a local hospital for treatment.

He’s been identified as 26-year-old Ramy Fahim of Irvine. He’s now facing possible murder charges for the deaths of the two men.

Security camera footage shared with KTLA shows Fahim standing outside the victims’ apartment hours before the deadly attack.

Fahim was taken to the hospital for treatment of injuries he apparently suffered during the attack. At the time, first responders were unaware of his connection to the killings.

The suspected murder weapon, a large knife, was recovered at the scene.

A man who lives in the building said he was trying to get into the elevator when he noticed something was wrong.

“There’s blood all inside the elevator. The officer says, ‘don’t touch the controls,'” said the resident, Rudy Sandoval.

Another neighbor said there was blood “everywhere” including the elevator and the hallway.

Aerial video from Sky5 showed a large police presence outside the apartment complex near Angel Stadium.

“Our homicide detectives are on scene. They’re currently working to determine what happened here and what the relationship is between all involved parties,” Anaheim police Lt. Shane Carringer said at the scene.

Forensic teams combed through the evidence at the scene throughout much of Tuesday, including surveillance video of the suspected killer.

Detectives said they found Fahim’s vehicle, a silver Honda Civic, in an adjacent parking lot right next to Angel Stadium.

Authorities are still working to determine a motive but say the brutal stabbing was not a random attack.