  We have investigated the ground state properties of the orthorhombic
structure compound PrRu$_2$Ga$_8$ through electronic and magnetic properties
studies. The compound crystallizes in the CaCo$_2$Al$_8$-type structure,
belonging to space group $Pbam$ (No. 55). The temperature dependence specific
heat shows a $\lambda$-type anomaly at $T_N$ = 3.3 K, indicating a bulk phase
transition probably of antiferromagnetic origin. At the N\'{e}el temperature
$T_N$, the entropy approaches the value of 4.66~J/mol.K which is about
0.8Rln(2), where R is the universal gas constant. The analysis of the low
temperature specific heat gives $\gamma$ = 46 mJ/mol.K$^2$. The temperature
dependence DC magnetic susceptibility $\chi(T)$ confirms the anomaly at 3.3 K
and follows the Curie-Weiss law for temperatures above 50~K, with the
calculated effective magnetic moment, $\mu_\mathrm{{eff}}$ = 3.47(2)~$\mu_B$/Pr
and Weiss temperature $\theta_p$ = --7.80(1)~K. This effective magnetic moment
value is in good agreement with the Hund$^\prime$s rule theoretical free-ion
value of 3.58~$\mu_B$ for Pr$^{3+}$. The electrical resistivity data also shows
an anomaly at $T_N$ and a broad curvature at intermediate temperatures probably
due to crystalline electric field (CEF) effects. The Pr$^{3+}$ in this
structure type has a site symmetry of $C_s$ which predicts a CEF splitting of
the $J$ = 4 multiplet into 9 singlets and thus rule out in principle the
occurrence of spontaneous magnetic order. In this article we discuss the
magnetic order in PrRu$_2$Ga$_8$ in line with an induced type of magnetism
resulting from the admixture of the lowest CEF level with the first excited
state.
