Whatever happened to Micheal Yew in Percy Jackson?

His body was never found, do you think Carter Kane and his lot fished him out of the east river and are holding him as a hostage? I think we should pay the Kane's a visit and demand to search the Brooklyn House for a sign of Micheal. It's not as though we will steal anything while we are there...we are simply looking for Micheal *Sly grin*