A* Pathfinding, destroying a path once it has reached its end

I'm using arongranberg's A* Pathfinding Project for a 2D game, and i need to destroy a path once it has reached its end to call another class to do a patrol function, and then once the player is spotted call back the class i left to make the AI follow the Player.

It goes like this:

AI follows PLAYER until its out of sight, then i need to DESTROY the path created, AI goes to Patrol mode, AI spots Player, AI follow player until it goes out of sight.

Here's where i need to destroy the path:

FixedUpdate(){

 //(stuff here...)
 
 if (currentWaypoint >= path.vectorPath.Count) {
                     if (pathIsEnded)
                         return;
                     Debug.Log ("End Of Path Reached");
                     if (useVelocity)
                         rb.velocity = Vector2.zero;
 
                 
 
                 if (chasing == false) {
                     Debug.Log("chasing false");
                     ep.spotted = false;
                     chasing = false;
                     seeker.enabled = false;
                     ep.Start();
                 }
 
                     pathIsEnded = true;
                     return;
                 }
 
 
 }

 

Thank you guys.