Family members are desperately trying to locate their loved ones after Wednesday’s mass shooting at Inland Regional Center in San Bernardino, California.
Taylor Pettit tells PEOPLE his 36-year-old sister Holly Graefe was in one of the center’s buildings when the shooting occurred and that there were approximately “five to 10 people in her office.”
Graefe, a wife and mother of two, sent text messages to her father letting him know she was safe.
“Dad shooting at my work, shot people in office. Waiting for cops to catch him. Pray for us,” the message read, according to Pettit.
The next text message she sent to her dad said that a police officer had knocked on the door and told the frightened employees to come with him – they were finally safe.
“She was sending text messages saying she is okay, she made it out,” Pettit tells PEOPLE. “They took her to a facility not too far away to debrief her on what happened. I don’t know how many hours she will be there. My mom and dad are there.”
Pettit says his parents called him during his lunch break to tell him about the shootings. Twenty minutes later, the terrified brother received news that Holly, who does data entry for the center, was safe.
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“I hoped that my sister could get out okay. She sent my parents a text message saying a police officer escorted her out. I believe the shooting occurred in the building next-door to hers,” he says. “I didn’t know what was going on but I was happy she was safe at the moment and she stayed safe. She is going to be with the police for a long time.”
He adds: “I spoke to my mom and she was holding it together but I could tell she was very upset.”
At least 14 people are dead and 17 wounded following Wednesday’s shooting.