I have had several friends die from fent laced coke... I don't hang out with people who do meth, really, but I have heard of meth sometimes ending up with fent in it. Personally I believe this is most likely an accident, due to all these drugs being packaged in facilities in Mexico (assuming you're in the US), where it would be easy for a brick of coke or a chunk of meth to accidentally rest on a spot of fentanyl, which sticks to it, and now you have a deadly hot spot on a drug that people aren't even thinking about fentanyl with.
I'm sorry for your loss.

I can't imagine. I am trying to convince all my friends to get narcan and fentanyl test strips. I have some and keep some in my car, and some at my house. That way, if I am ever out doing drugs and someone falls out, I will have narcan nearby. I try to remember to tell the people I am with that I have it in my car... I don't always remember. So far only one of my friends has followed my footsteps, and it was actually her idea originally. I wish everyone would, it would make me feel better. Sadly, fentanyl is showing up in everything these days, here and there. It's like Russian roulette.