I and my friends play a Lan world. From last 2 days mobs have started spawning in our house even where there are torches and a light level of 7+. Till now witch, es, ghast , zombies, and with skeletons have spawned. A ghastly nearly burnt our house.
Ghosts can't naturally spawn in the overworld. Sounds like someone is using cheats on the server to get spawn eggs and is playing tricks on you.
It's a Lan world. Only me and my friends play them. I checked the players list but only me and my friends were there