laughing, so nothing out of the ordinary." He then left Liam at around 4.05 a.m., just one hour before the singer died. In the upcoming documentary TMZ Investigates: Liam Payne: Who's to Blame?, ...

Liam Payne spent final night with waiter 'dealer ... talking to everybody, having fun, laughing, so nothing out of the ordinary. So that's when I said, 'bye'. He seemed playful and happy.