Ghosts and attacks

Titanicus

Hipparchus
I don't know how it can be possible but recently I was attacked from a city showing as a Ghost.
How is this ?
 

LaSophie

Chiliarch
A player must have sent out the initial attack and ghosted half-way through it. (I think).

Either that, or it was a siege, and the city owner sent their troops to a ghost town as a back snipe. Returning units will show as attacks from those cities and players