Twelve-year-old sent pornographic WhatsApp meme after argument: who should I inform?

[Noonoo291]

My son had a little spat with one of his friends yesterday (nothing serious). The friend got one of his friends to spam my son on WhatsApp. It started off with a little bit of name calling, with my son replying asking who this was. The boy then sent my son a pornographic meme (he's 12). We were out together at the time and I saw it immediately as did he and he was really shocked. He told me later he felt a bit traumatised over it so we talked about it and he's ok today. He's now friends again with his friend and blocked the other boy.
My question is, where do I go from here? Tell the school? Tell his friends parents? Find out who the boy is and tell his parents? Tell the police? I think he deleted the chat but I'm going to have a look tonight, so no evidence as such

Honestly, I think it is. Years ago kids would have a sneak peak at their dads ‘mags’ under the bed. Now they have access to a whole world of porn - it’s just the updated version. I don’t know how we pull back from it now, these kids have far too much access to the world.

Well I have a 12 year old boy and disagree.

You are not the only person to have or have had a 12 year old. Just to clarify though I don’t mean it’s normal as in it’s ok, i just mean it is within the realms of normal for 12 year olds to be somewhat curious. Sadly looking at images in a magazine has turned into extreme graphic videos. I wouldn’t automatically assume a 12 year old having a pornographic image means they are being abused. I do understand that it also does not exclude abuse.

I would however report the incident to school and let them take it from there.