Weyl’s law for Hecke operators on GL(n) over imaginary quadratic number fields

We prove Weyl's law for Hecke operators acting on cusp forms of ${\rm GL}(n)$ over imaginary quadratic number fields together with an upper bound for the error term depending explicitly on the Hecke operator. This has applications to the theory of low-lying zeros of families of automorphic $L$-functions.