Incident in upcoming village

A scout from the other plane has arrived.

It is of the illithid faction. It arrives in or near a small village and attacks to test the general battle readyness and availability of resources of the locals.

It will attack during the morning, kill any who oppose and steal food supplies, using magic to take a large amount. (Clue)

It will have killed using strange methods (clue)

The bodies will show signs of these attacks (clue)

It will have fled and be camping. It plans on scouting the local area.

If attacked it will flee.