  We present nuclear magnetic resonance (NMR), neutron diffraction,
magnetization, and transport measurements on a single crystal and powder of
CeVGe$_3$. This material exhibits heavy fermion behavior at low temperature,
accompanied by antiferromagnetic (AFM) order below 5.8 K. We find that the
magnetic structure is incommensurate with AFM helical structure, characterized
by a magnetic modulated propagation vector of $(0, 0, 0.49)$ with in-plane
moments rotating around the $c$-axis. The NMR Knight shift and spin-lattice
relaxation rate reveal a coherence temperature $T^*\sim 15$ K, and the presence
of significant antiferromagnetic fluctuations reminiscent of the archetypical
heavy fermion compound CeRhIn$_5$. We further identify a metamagnetic
transition above $H_m\sim 2.5$ T for magnetic fields perpendicular to $c$. We
speculate that the magnetic structure in this field-induced phase consists of a
superposition with both ferromagnetic and antiferromagnetic components, which
is consistent with the NMR spectrum in this region of the phase diagram. Our
results thus indicate that CeVGe$_3$ is a hexagonal structure analog to
tetragonal CeRhIn$_5$.
