Study of kaonic final states in ${\pi }^{-}p$ at $190\text{GeV}$

We discuss the status of analyses of data recorded in the 2008 and 2009 runs of the COMPASS experiment at CERN with sepcific focus on final states with $K_S^0{K}_S^0{\pi }^{-}$ and $K^{+}{K}^{-}{\pi }^{-}$ produced in ${\pi }^{-}(190\text{GeV})p$ scattering. The interest in such final states is motivated by a summary of some of the relevant literature. We also show first results from the analysis of diffractively produced $K\bar{K}\pi$ states. Two prominent three-body structures, one around $1.8\text{GeV}$, the other at $2.2\text{GeV}$ decaying via known $K\bar{K}$ and $K\pi$ states are seen.