My concern is that should i be worried about this ? I do not live in the US and the funds are in my Electrum wallet. Can law enforcement agencies can approach me

If they already blocked your account, you can explain that you have received those coins before LE announcing that mixer illegal and that you had no prior knowledge of anything related to criminal activities of the said mixer, so legally you are OK, however if now after it has been established that the funds were illegally obtained, whatever you do from now on, you will be considered a complicit in their crimes, so if you don't send to CEX now, you are OK. you might as well use a mixer, I'm not going to say which one, but you know which one I'm talking about.😉
@yahoo, so we should send address to CM via PM? cool idea.