I'm sure there was a reason to take his clothes off. Maybe he was angry that they locked him up, acted aggressively, threw away the water bottle, threatened suicide,...
Sitting in the monkey house means everyone has limited access to food and drink. This is only 2-3 times a day. It's not a hotel.
Also, has the attorney been paid or is he still waiting for his money? The fact that he is ill with Covid is no reason not to call the court or send his help to help the New Zealander. But pending payments are a reason.
No embassy supports someone who has committed a crime. You have to help yourself. It's your own problem.
Surprising, on the photo him has his clothes on.