  A Hamiltonian decomposition of $G$ is a partition of its edge set into
disjoint Hamilton cycles. Manikandan and Paulraja conjectured that if $G$ and
$H$ are Hamilton cycle decomposable circulant graphs with at least one of them
is nonbipartite, then their tensor product is Hamilton cycle decomposable. In
this paper, we have proved that, if $G$ is a Hamilton cycle decomposable
circulant graph with certain properties and $H$ is a Hamilton cycle
decomposable multigraph, then their tensor product is Hamilton cycle
decomposable. In particular, tensor products of certain sparse Hamilton cycle
decomposable circulant graphs are Hamilton cycle decomposable.
