diff --git a/README.md b/README.md
index f5582d6b..200e3ec3 100644
--- a/README.md
+++ b/README.md
@@ -470,6 +470,7 @@
 * Zombies spawn in the Docks Gates zone when in the Docks zone
 * Grief: added Smoke Grenades to the Mystery Box
 * Grief: added Richtofen Head meat powerup model
+* Grief: Brutus spawns every 4-6 minutes
 
 #### Docks
 * Added Grief game mode
diff --git a/scripts/zm/zm_prison/zm_prison_reimagined.gsc b/scripts/zm/zm_prison/zm_prison_reimagined.gsc
index 359e6fb1..b7fca6f1 100644
--- a/scripts/zm/zm_prison/zm_prison_reimagined.gsc
+++ b/scripts/zm/zm_prison/zm_prison_reimagined.gsc
@@ -52,6 +52,7 @@ init()
 
 	level thread plane_auto_refuel();
 	level thread updatecraftables();
+    level thread grief_brutus_spawn_after_time();
 }
 
 zombie_init_done()
@@ -615,6 +616,27 @@ craftabletrigger_update_prompt( player )
     return can_use;
 }
 
+grief_brutus_spawn_after_time()
+{
+    if ( !is_gametype_active( "zgrief" ) )
+    {
+        return;
+    }
+
+    level endon("end_game");
+
+    level waittill("restart_round_start");
+
+    while (1)
+    {
+        time = randomIntRange(240, 360);
+
+        wait time;
+
+        level notify( "spawn_brutus", 1 );
+    }
+}
+
 manage_zones( initial_zone )
 {
 	level.zone_manager_init_func = ::working_zone_init;