VB.NET DELETE QUERY

Hello Expert,

I have a windows form that contains a CheckedListBox Which Display all employees in my Database Table (MS-Access 2007). When the Form is load my CheckedListBox Display Employees with no errors.

I want the user to delete more than employee at a time so here is my error message:
System.Data.OleDb.OleDbException: 'Characters found after end of SQL statement.'

Please check the code:

 Private Sub DeleteRecord()

        If MsgBox("Les employés sélectionnés seront supprimés! Es-tu sur de vouloir continuer?", MsgBoxStyle.YesNo, "Guarde Security Service - Supprimer") = MsgBoxResult.Yes Then
           

            Dim Counter As Integer
            Dim DelString As String = "" 

            For Each index As String In cbLstEmployee.CheckedItems

                OLEDBControl.AddParams("@empName" & Counter, index)

                DelString += "DELETE FROM Employees WHERE empName=@empName" & Counter & ";"
                Counter += 1
            Next

            OLEDBControl.ExecQuery(DelString)

            'Report and Abort Error...
            'If OLEDBControl.HasException Then Exit Sub

            MsgBox("La suppression a été effectuée avec succès!", MsgBoxStyle.Information, "Guarde Security Service - Supprimer")

            'Refresh CheckedListBox...
            FetchEmployees()
        End If
    End Sub

Kindly note that if the user Checked Only One Employee the Code execute successfully without errors
otherwise I got the error message mentioned above.

Many thanks in advance for your precious time and considertion.