  We report $\beta$-detected NMR of ion-implanted $^{8}$Li in a single crystal
and thin film of the strongly correlated metal LaNiO$_{3}$. In both samples,
spin-lattice relaxation measurements reveal two distinct local metallic
environments, as is evident from $T$-linear Korringa $1/T_{1}$ below 200 K with
slopes comparable to other metals. A small, approximately temperature
independent Knight shift of $\sim 74$ ppm is observed, yielding a normalized
Korringa product characteristic of substantial antiferromagnetic correlations,
but, we find no evidence for a magnetic transition from 4 to 310 K. Two
distinct, equally abundant $^{8}$Li sites is inconsistent with the widely
accepted rhombohedral structure of LaNiO$_{3}$, but cannot be simply explained
by either of the common alternative orthorhombic or monoclinic distortions.
