A waiter prosecutors need to cost in reference to Liam Payne‘s demise admits he used cocaine with the singer … however insists he didn’t receives a commission and is NOT a drug seller.

Braian Paiz instructed us in our upcoming documentary “TMZ Investigates: Liam Payne: Who’s to Blame?” — airing Monday night time at 8 PM ET on FOX — he partied with Liam within the singer’s Buenos Aires Resort room.

Paiz says they drank whiskey and used the cocaine he delivered to the resort. He says they did it on 2 events … the second simply 2 days earlier than Liam’s deadly fall from the resort balcony.

Braian says he noticed medicine scattered all over the place … together with the Dove cleaning soap field and tin foil extensively seen in images taken after Liam’s demise.

Braian says he by no means accepted cash from the singer … and claims he even turned down Payne’s Rolex watch when the star provided it as cost.

There’s one reward he did take from Liam, Paiz says … watch the clip to listen to what memento he obtained.

Paiz is considered one of 5 males prosecutors are going after in reference to Liam’s demise.

We additionally interviewed Liam’s shut buddy Roger Nores— whom prosecutors accuse of abandonment and supplying Liam with medicine — and eyewitness Bret Watson … who noticed Liam fall to his demise.