Ariana Grande doesn't think Justin Bieber needs ''punishment''.

The 20-year-old pop star doesn't believe anyone ''understands'' the pressure the 'Believe' hitmaker is under because of his global fame and thinks he needs ''help'' rather than heavy criticism for his recent behaviour, which includes being arrested on suspicion of driving under the influence (DUI), driving with an expired license and resisting arrest amid. There has also been mass speculation he has been taking drugs such as cannabis.

She said: ''He's very isolated ... I don't think anybody understands. I don't think anybody could ever understand. I certainly don't, but I just think that people could be a little more sensitive to him ... he does need help, but I don't think he needs punishment.''

Ariana - who shares a manager, Scooter Braun, with Justin - thinks the 19-year-old singer needs a ''good talk'' with his loved ones and is confident he will be OK because of the support around him.

She added to 'Access Hollywood': ''There's a difference between helping somebody and punishing them. It's gets to a point where all you need is a good talk with your family.

''I think he's in good hands and I don't think he's putting anything at jeopardy other than his health ... I just know that a lot of people are rooting for him to be healthy and that's like the most important thing.

''He's in really good hands. And yeah so he'll be fine.''