ONTARIO (CBSLA) – Two young men were shot and killed at an apartment complex in Ontario Monday night.

Jan. 13, 2019.

The shooting occurred at around 9 p.m. at the Vistara Apartment Complex, located at 3410 East 4th St., Ontario police told CBS2.

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Officers arrived on scene and found two men, ages 19 and 21, with gunshot wounds. Both died at the scene. Their names were not released.

Jan. 14, 2019. (CBS2)

“I woke up just to someone screaming really loud, saying ‘why, why, why’ several times,” neighbor Rosalinda Castellanos told CBS2 Tuesday morning. “And he was just going crazy.”

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About two hours later, police were called to a nearby hospital for a third man who was being treated for gunshot wounds. He was in stable condition. A fourth man who was not hurt was detained for questioning at the same hospital. Investigators believe the two men, both of whom are in their early 20s, are somehow linked to the shooting.

No suspects are believed to be at large.

“At this moment there’s nobody at large nor anybody we’re looking for; the scene is safe,” Ontario police Officer Eliseo Guerrero said.

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The exact circumstances and a motive was not confirmed. There’s no word if any of the victims lived at the complex. The public was asked to avoid the area.