I am using TruePVE and haven't changed any rulesets before this happened. I saw my players talking about it a few days ago but paid no attention until I witnessed it first hand today. I was spectating a player on the ground while another player was passing by in a mini overhead until the turret killed the player that's on foot.

[Oxide] 03:58 [Info] [Death Notes] TornBanjoString was killed by unknown owner's Auto Turret

TornBanjoString[76561198043110554] was killed by Bullet​