C# Controls created on one thread cannot be parented to a control on a different thread

I am running a thread and that thread grabs information and create labels and display it, here is my code

    private void RUN()
    {
        Label l = new Label();
        l.Location = new Point(12, 10);
        l.Text = "Some Text";
        this.Controls.Add(l);
    }

    private void button1_Click(object sender, EventArgs e)
    {
        Thread t = new Thread(new ThreadStart(RUN));
        t.Start();
    }

The funny thing is that i had a previous application that has a panel and i used to add controls to it using threads without any issue, but this one won't let me do it.