On Wed., Dec. 2, another mass-shooting in the United States occurred in San Bernardino, Calif., killing 14 and wounding 17 others. It took place only five days after the shooting in Colorado in a Planned Parenthood Clinic, killing three.

At 11 a.m. the firing of assault rifles and handguns began within the Inland Regional Center in the city east of Los Angeles. The suspected shooters are identified as Syed Rizwan Farook, 28, and Tashfeen Malik, 27, a married couple. Both were killed later that day in a shootout with the police.

The couple arrived at the county health department heavily armed with two assault rifles and two semi-automatic pistols. It was then that they began shooting at the crowd of people. Shortly after the shooting began, people inside of the building sent out text messages to loved ones and alerted the police.

The two suspects fled in a SUV and were killed in a shootout with the police later that afternoon. There is a third suspect that fled the scene and has been detained, however it is unconfirmed whether the suspect was involved. There were explosives found at the scene, but they did not detonate and were removed.

Malik allegedly pledged allegiance to ISIS recently. They couple attacked Farook’s workplace.

In a press conference, San Bernardino Police Chief Jarrod Burguan, shared information about the motives of the shooters.

“There had to be some degree of planning that went into this,” Chief Burguan said. “I don’t think they just ran home and put on these tactical clothes.”

The investigation is still ongoing and officials have been cautious not to jump to conclusions. The aftermath of the event has left the citizens of the U.S. curious about the source of the weapons acquired by the attackers and the purpose of the event.