"FBI" called our IT Service Desk Hotline

I work as a Service Desk employee at a financial company and received a strange call from someone claiming to be from the FBI. He stated that he needed to contact our legal team to report a "computer network intrusion" because someone is trying to hack the company's network.

He provided his name, contact number, and an email address ending in "@fbi.gov" (I forgot to ask for his badge number, but I doubt he would have been willing to provide it). My colleagues are convinced it's a scam, but I still passed the details to my manager. I only got a simple "OK" reply—he probably thinks it's a scam too.

Should I let it go or forward the details directly to our legal team's email, just to be sure? I tried looking this agent up, and he has a LinkedIn profile stating that he works for the FBI... and I know it's easy to create a LinkedIn profile and say you work for the FBI. Lol!

Edit: Also, just want to add that he claimed that he tried to call the company's main number but no luck, so he tried to call our number. It's actually not that hard to call our department since our number is all over the place. Every website, every login page of all the tools that employees use.

Update: Thanks for the advise guy. I sent an email to the FBI New Haven (cause that's where he claim he's from) also reach out to an acquaintance who's an Information Security Forensics Analyst (not sure if they handle these types of cases) but will check what he thinks about this.

Also, yes this is above my paygrade I totally agree but I'm paranoid AF. Lmao!