December 3, 2015 1:11 PM EST

As multiple suspects launched an attack in San Bernardino, Calif., on Wednesday that killed at least 14 and injured 17 others, families of those in the center for the developmentally disabled where the shooting took place began to receive texts and videos from their loved ones on lockdown.

In an emotional video, above, relatives of some of the survivors share the fearful cell-phone messages they received in real-time as the shooting unfolded.

Read next: What To Know About the San Bernardino Shooting

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