NSRS is a pump and dump which is aka stock manipulation. That is illegal! The Securities & Exchange Commission can issue an Order of Suspension of Trading of the stock of any company if there is evidence that the share price is being manipulated. The stock can be halted for ten days with no cause.
Brokers can also suspend trading as Zecco did when NSRS got the DTCC chill.
Four stocks were halted on the OTC on Thurs. Eleven were halted on Feb. 23rd. It does happen.