Delete Records from a database - asp.net

Question

I am trying to delete set of records under my ASP.NET Application - API Controller. Here is my code from API Controller:
public JsonResult Delete([FromBody]ICollection<ShoppingItemViewModel> vm)
{
if (ModelState.IsValid)
{
try
{
var items = Mapper.Map<IEnumerable<ShoppingItem>>(vm);
_repository.DeleteValues(items, User.Identity.Name);
return Json(null);
}
catch (Exception Ex)
{
Response.StatusCode = (int)HttpStatusCode.BadRequest;
return Json(null);
}
}
else
{
Response.StatusCode = (int)HttpStatusCode.BadRequest;
return Json(null);
}
}
And here is my AngularJS Controller part taking care of this:
$scope.RemoveItems = function () {
$scope.isBusy = true;
$http.delete("/api/items", $scope.items)
.then(function (response) {
if (response.statusText == "OK" && response.status == 200) {
//passed
for (var i = $scope.items.length - 1; i > -1; i--) {
if ($scope.items[i].toRemove == true) {
$scope.items.splice(i, 1);
}
}
}
}, function (err) {
$scope.errorMessage = "Error occured: " + err;
}).finally(function () {
$scope.isBusy = false;
});
}
For unknown reason, this works like a charm in my POST method but not in the Delete Method. I believe that the problem might be caused by the fact, that DELETE method only accepts Integer ID?
If that is the case, what is the correct way how to delete multiple items with one call?