What to do about a fraudulent claim taken against you?

Hi everyone, never been in this situation before and frankly do not feel very trusting of my insurance company. I received an email notification this morning that a claim was taken out against my auto insurance for an incident that occurred last October (exactly 5 months ago, to the day).

There is no information on my online profile about the claim except the claim number and incident date. I immediately called my insurance company and he told me the incident was an alleged rear-ending so they automatically faulted me. I was routed to the adjuster on the claim and he told me this incident took place in a town about an hour away from me that I do not drive through. He said he would contact the party making the claim and get back to me, but I’ve since heard nothing back. The adjuster also claims that this shouldn’t “immediately” affect my insurance rates (hence the lack of trust in this company).

What steps can I take to protect myself? I’ve read other threads from similar situations that said folks were still given a “no fault” accident on their profile. At what point do I make moves to escalate this situation?

Needless to say, I’m frustrated that this is now my problem for an accident I was never involved with.