India, April 21 -- Justin Bieber fans seemed worried after a video of the singer 'forcefully' dancing at Coachella surfaced on social media. Some wondered if the 31-year-old is 'on drugs'. A clip of Bieber puffing what appears to be a joint also emerged. This comes as the Canadian's health has become a growing concern for fans, who are questioning his mental well-being. There are rumors about his possible split from Hailey.

Bieber was at Coachella during the festival's second weekend. In one video, he could be seen lighting up and smoking a joint. In another one, the 'Baby' star looked visibly uncomfortable while dancing to Kendrick Lamar's 'Not Like Us'.

Several fans pointed out that Justin Bieber looked unusually thin and weak. "rammy...