LU135 Hacker respawning at NW Airfield with full gear

[Jens (DayZ) 11]

Server: LU135

Local time: 03:40 AM (Timezone: GMT+2)

What happened: Two players were blowing up buildings at NW Airfield. Their names were {CQF} GEN Shepard and Diryavaya boshka. They were in the (partly destroyed) control tower, and my friend and I took a few shots at them with .50 cal sniper rifles. For some reason, it said "X was killed by Jens (Friendly fire)" for both players. We took a short break. When we log on again, just a few minutes later, I see {CQF} GEN Shepard walking around in the tower once again with all his gear. I shoot him - same message as before. We log off to avoid getting killed by the hacker(s).