I am new to abelian varieties and became interested in the singular set of a subvariety in a complex torus.

The space of ample divisors (non necessarily smooth) in a complex torus $T^n$ seems quite large, as we can always move it, however, I don't have an example of a global hypersurface $M$ in $T^n$ with codim 1 singular set.

We may consider the theta divisor in a ppav. For example, for a generic ppav the theta divisor is smooth. For a particular ppav, a result I am aware of (the book of Birkenhake-Lange) is that if $C$ is a curve of genus $g \geq 4$ and $J(C)$ its Jacobian, the singular set of Theta divisor is a closed set on $J(C)$ with dim $Sing \Theta=g-4$ if $C$ is not hyperelliptic and dim $Sing \Theta=g-3$ if $C$ is hyperelliptic.

Now my question is: is there any example of an ample divisors (or subvariety) in a complex torus whose singular set has codimension 1. In general I am interested in any reference on estimates on the singular set.