Another child threatening to make Ds perform sexual act on him

[MyMyMy19]

Not AIBU but really need some advice!!
Ds aged 9 came home crying today after school as a boy who is 10 at his school has today threatened to beat DS up tomorrow and then make him "suck his c@@@"
I am disgusted, shocked ,upset as is obviously my DS. He doesnt want to go to school and is quite frankly scared of this boy.
What am I to do?
It was too late in the evening for me to contact the school when I found out so tomorrow morning is the first time I'll be able to speak to anyone about this.
I'm rightly very upset and angry and am trying to think what to do best for my Ds but where do I start?

I'd be contacting the school, SS and the police.

Speak to the Safeguarding Lead, they will refer to Children’s Social Care and if necessary will implement support for the child. It could be him trying to be the tough kid or it could be sexually harmful behaviours from what he is seeing at home. In the meantime, you can support your child by doing some Safe Touch work with him.

www.nspcc.org.uk/preventing-abuse/keeping-children-safe/underwear-rule/

I'd be contacting the school, SS and the police.

Bit of an over-reaction. Report to the school and they will deal with both the safeguarding risk and the behaviour. No need for the police.