  We report first measurements on tunneling into the {\it interior} of a Ru
microdomain embedded in bulk chiral p-wave superconductor Sr$_{2}$RuO$_{4}$.
The junctions were prepared by pressing a pure In wire onto the ${\it{ab}}$
face of a Ru-containing Sr$_{2}$RuO$_{4}$ single crystal. Below the
superconducting transition temperature ($T_{c}$) of Sr$_{2}$RuO$_{4}$ (= 1.5
K), we observed a zero-bias conductance peak (ZBCP) associated with the
proximity-induced p-wave superconductivity. However, below 0.44 K, roughly the
$T_{c}$ of bulk Ru (= 0.5 K), an unexpected Ru gap and a broad ZBCP
superimposed with subgap features were found to emerge, with unusual magnetic
field dependences. We argue that the new features resulted from a mixed pairing
state featuring intrinsic ${\it{s}}$- and ${\it{p}}$-wave condensates in the
interior of a Ru microdomain embedded in Sr$_{2}$RuO$_{4}$.
