The gym was burnt by unknown miscreants on Thursday night. The mob also vandalised the public meeting venue at Sadhbhav Mandap.
Various organisations have called for a shutdown during the visit of the CM.
The district administration has also imposed prohibitory orders in the district.
The decision of the government to protect reserved forest areas was anti-tribal, the organisations said.
The Manipur government has cracked down against the planting of poppy plants in forest areas. (UNI)
