How do I Delete multiple selected List of contact in Contact List

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ASP.NET

MVC5

//
        // POST: /ManageContact/Delete/5
        [HttpPost]
        public ActionResult Delete(ContactsViewModel model)
        {
            var contact = _contactService.GetContactById(model.Id);

            if (contact == null)
                return View();

            var idArray = new[] { model.Id };
            _contactService.RemoveContact(idArray);

            return RedirectToAction("Index");
        }

this the contact controller

@using (Html.BeginForm())
        {
            <div>
                <h4 class="center">Available Contact(s)</h4><br /><div>
                    @Html.AntiForgeryToken()

                </div>
            </div><div class="span12"></div>
            <div class=" btn-group">
                <input class="btn btn-info " type="submit" value=" Send Message"><input class="btn btn-info " type="submit" value=" Add to Group"><input class="btn btn-info  " type="submit" value=" Delete Contacts">
            </div>
        }
        <div class="span11 blog-item ">
            <div class="row-fluid">
                <div class="span12">
                    <table class="table table-striped table-hover table-bordered">
                        <thead>
                            <tr>
                                <th></th>
                                <th><h4 class="center">Contact Name(s)</h4></th>
                                <th><h4 class="center">Mobile Number(s)</h4></th>
                                <th><h4 class="center">Actions</h4></th>
                            </tr>
                        </thead>
                        @foreach (var item in Model)
                        {
                            <tbody>
                                <tr>
                                    <td><input type="checkbox" value="@item.Id" name="deleteInputs"></td>
                                    <td>
                                        @Html.DisplayFor(modelItem => item.Name, new { @class = "center" })
                                    </td>
                                    <td>
                                        @Html.DisplayFor(modelItem => item.MobileNumber, new { @class = "center" })
                                    </td>
                                    <td>
                                        <a data-toggle="modal" href="#loginForm">Add To Group</a>
                                        @*@Html.ActionLink("Add to Group", "AddtoGroup", new { }, new { @class = "center", })*@ |
                                        @Html.ActionLink("Edit", "Edit", new { id = item.Id }, new { @class = "center" }) |
                                        @Html.ActionLink("Delete", "Delete", new { id = item.Id })
                                    </td>
                                </tr>
                            </tbody>
                        }

                    </table>

And this is the view that display every contacts in a table...

So please how do i go about selecting multiple contact using the checkbox and delete with the button in my controller and am using Services with Repository