The biological mother of a man killed in a shooting in March has filed a lawsuit against the North Las Vegas casino where the slaying happened.

Willecia Calhoun, identified in the lawsuit as the natural mother of Na’Onche Osborne, filed a lawsuit Nov. 24 that alleges the operators of the Aliante Casino “failed to provide adequate security” prior to the March 27 fatal shooting.

Authorities have said Aerion Warmsley, 19, killed Osborne, 23, in the March shooting, which happened on the Aliante’s casino floor, then fled from police in a high-speed chase, stealing three different cars and hitting two pedestrians as he tried to escape.

Osborne, of North Las Vegas, was the adopted son of Pat Spearman, a former North Las Vegas state senator and mayoral candidate.

In the 14-page complaint, file

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