  Let $G$ be a second countable, locally compact groupoid with Haar system, and
let $\mathcal{A}$ be a bundle of $C^{\ast}$-algebras defined over the unit
space of $G$ on which $G$ acts continuously. We determine conditions under
which the associated crossed product $C^{\ast}(G;\mathcal{A})$ is a continuous
trace $C^{\ast}$-algebra.
