Could China's ICO ban be related to North Korea's nuclear test?

As we know, North Korea just did a provocation by testing a hydrogen bomb. This event happened almost immediately before China banned ICOs. It could be that China is concerned about money laundering and the threat that North Korea could be behind some of these ICOs? Is this a conspiracy theory? What do you all think?

References

1. https://siliconangle.com/blog/2017/09/03/china-bans-initial-coin-offerings-pending-review/