Witness in Building Near San Bernardino Shooting Location Says Suspect Left 'Calmly' in SUV

San Bernardino Shooting: At Least 2 Suspects IdentifiedPlayABCNews.com
WATCH San Bernardino Shooting: At Least 2 Suspects Identified

An eyewitness in San Bernardino, California, whose office window faces the Inland Regional Facility told ABC News he witnessed someone "calmly" leaving the scene of today's mass shooting in a dark-colored SUV.

Speaking from his office while it was still on lockdown, Glenn Willwerth said he could hear people screaming and running at the nearby facility after he heard up to 15 shots fired.

“I don’t know if they knew what they were running from," he said.

PHOTO: Employees and other people are evacuated by bus from the site of a mass shooting at the Inland Regional Center Dec. 2, 2015 in San Bernardino, Calif.David McNew/Getty Images
Employees and other people are evacuated by bus from the site of a mass shooting at the Inland Regional Center Dec. 2, 2015 in San Bernardino, Calif.

After an employee informed him of the active shooting scene, Willwerth told ABC News he grabbed his pistol and headed toward the direction of the gunshots.

Inland Regional CenterABC News
Inland Regional Center

At least 14 people were killed and another 17 injured when multiple gunman opened fire at the facility for the developmentally disabled, authorities said. Up to three suspects are still at large, police said.

Local and state agencies mobilized planes and helicopters to search for the SUV.

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